Disclosed is a process of preparing a biodegradable polymer using an enzyme catalyst and a biodegradable polymer prepared through the process. The process includes polycondensing a polyhydric alcohol monomer having a secondary hydroxyl functional group and an acid monomer having a dicarboxylic group in the presence of the enzyme…
US 6692650 Variable viscosity fluids via application of magnetic fields
The present invention provides a magnetorheological fluid in which magnetic particles coated with a hydrophilic surfactant are dispersed in a water in oil emulsion, and a process for preparing the same. The magnetorheological fluid of the present invention is prepared by adding water to oil dissolved with emulsifier, stirring it to give a mobile…
US 8076045 Solid oxide fuel cell
The present invention relates to a solid oxide fuel cell in which an anode is formed with a hollow portion, and the hollow portion may be used as a gas diffusion path, thereby improving gas diffusion performance, and the hollow portion may be also used as a reinforcement hole for reinforcing a strength or a current collecting hole for increasing a…
US 7988750 Method for recovering methane gas from natural gas hydrate
The present invention relates to a method for recovering methane gas by adding a gas mixture containing N2 and CO2 gases to natural gas hydrate and reacting them. The method for recovering methane gas from natural gas hydrate of the present invention comprises the step of replacing CH4 gas in natural gas hydrate with a gas mixture containing N2…
US 7901916 Method for producing hydrogen from organic wastes
The present invention relates to a method for producing hydrogen by batch process capable of replacing the existing complex continuous organic waste treatment system by using pretreated organic waste not only as a substrate but also an inoculum. According to the present invention, the existing complex continuous process can be changed into a…
US 6548011 Fabrication of alumina-based ceramics
A method of manufacturing an alumina-based ceramic includes sintering a powder compact of an iron-containing alumina powder in an atmosphere (N2, 95 N2-5 H2, H2) of a relatively low oxygen partial pressure, and annealing in an atmosphere (80 N2-20 O2, O2) higher in oxygen partial pressure than the sintering atmosphere to provide an alumina-based…
A method for manufacturing lithium-manganese oxide powders for use in a lithium secondary battery is provided. The method includes the steps of dissolving in nitric acid a composition selected from the group consisting of: manganese oxide, manganese carbonate, or manganese to form a manganese solution, and then dissolving in the manganese solution…
US 6106768 Mm-Ni type hydrogen storage alloy for Ni/MH secondary cell
There are disclosed Mm/Ni type hydrogen storage alloys for Ni/MH secondary cells. The alloys which allow the cells to be of high performance and high capacity can be prepared at lower costs than the production costs of conventional Co-rich hydrogen storage alloys, by reducing the amount of the Co element. The Co element is partially or wholly…
US 6086820 Method for producing electrodes for Ni/metal hydride alloy secondary cells
A method for producing an electrode of Ni/metal hydride alloy secondary cells. The electrode may be produced by mixing an active material with approximately 10-50 wt % of Cu powders, which can serve as a binder as well as a current collector, and cold-pressing the mixture at a pressure of 10 ton/cm. As the Cu-compacted electrode continues to…
US 6491862 Method for Producing SiC Preform with High Volume Fraction
Disclosed is a method for producing an SiC preform of a high volume fraction used for the manufacture of a metal matrix composite. The method involves the steps of mixing SiC particles of different particle sizes each selected from a range of 0.2 to 48 m with an organic binder, an inorganic binder, an aggregating agent, and distilled water,…
US 6440288 Method for preparing anode electrode for high voltage electrolytic capacitor
Disclosed is a method for forming an aluminum oxide film of a large surface area on an electrode for a high voltage electrolytic capacitor. In accordance with the method, an oxide film of a uniform thickness is formed, prior to a process of etching the oxide film. A re-anodization is then partially conducted for an etched portion of the oxide…
US 6731362 Polymer Blend for Preparing Liquid Crystal Alignment Layer
The present invention relates to a polymer blend of cinnamate polymer and polyimide polymer, which are photo-reactive polymers, for preparing liquid crystal alignment layer having a high pretilt angle in photo-alignment, a process for preparing liquid crystal alignment layer by employing the said blend, a liquid crystal alignment layer prepared by…
US 6936380 Process for Preparing Lithium Polymer Secondary Battery
The present invention relates to a novel process for preparing a lithium polymer secondary battery which comprises a step of direct coating of a plasticized and crosslinked polymer electrolyte onto a lithium electrode. The process for preparing a lithium polymer secondary battery comprises the steps of: (i) dissolving a mixture of a crosslinking…
US 6902839 Polymer Electrolyte Membrane for Fuel Cell and Method for producing the same
Disclosed is a polymer electrolyte membrane for a fuel cell, which restrains a crossover phenomenon of fuel and a decomposition of a polymer membrane over platinum, and shows outstanding power output and performance characteristics during operation of the fuel cell, and a method for producing the same.
US 7893133 Adhesion Enhancer for Polymer Composition Substrate and Polymer Composition
The present invention provides an adhesion enhancer and a polymer composition containing the adhesion enhancer for enhancing the adhesion performance of polymer composition substrates to a primer. The adhesion enhancer of the present invention includes an alcohol, a phenol or another organic compound having a hydroxyl group of the alcohol or…
US 7452432 Apparatus for and method of bonding nano-tip using electrochemical etching
Disclosed herein are an apparatus for and a method of bonding a nano-tip using electrochemical etching, in which a good bonding stability can be provided. The nano-tip bonding apparatus comprises a glass plate having a top surface of a certain desired area. An electrolytic solution having conductivity is placed on the top surface of the glass…
A method for manufacturing LiMn2O4 powders for use in a lithium secondary battery positive electrode, is provided, in which oxide or carbonate is used as a positive electrode material, a solution is dried at a temperature higher than 150 C., and the resulting matter is put into a reaction furnace in order to be calcinated for a short time, after…
US 6531446 Antimicrobial Peptides
The present invention relates to peptides that are more potent than or equally potent as the conventional antimicrobial peptides and has strong antimicrobial activities at high salt concentration.
US 6524344 Cement Coverings in Artificial Joint Stems and Systems
A cement jacket for a cemented artificial joint stem, the cement jacket including a main body with a hollow interior and an open upper end for receiving and enclosing at least a part of a stem of an artificial joint, the cement jacket being shaped and adapted for longitudinal insertion in an opening formed in a bone canal of a human body, the…
US 6465671 Silane Coupling Agent and Method for Preparing the same
Disclosed herein are a silane coupling agent and a method of preparing the same useful for a composite organic-inorganic material. The silane coupling agent is represented by the formula of R1R2R3SiX, wherein R1, R2, and R3, respectively, represent straight or branched alkyl having 4 to 22 carbon atoms, alkoxy, phenyl, phenyl alkoxy, benzyloxy or…
US 6358464 Method for Making BaTiO3-based Dielectric
A method for making a BaTiO3-based dielectric having a high dielectric constant and a low dielectric loss wherein, a BaTiO3-based body is subjected to a pre-heat treatment in a hydrogen (H2) atmosphere or a reducing atmosphere containing mixed gas of hydrogen and nitrogen in a ratio of hydrogen:nitrogen5 to 100%:0 to 95% prior to a sintering…
US 6337370 Inorganic-organic copolymer using polyvinylalcohol-silane coupling agent
Disclosed are inorganic-organic copolymers and their preparation using polyvinylalcohol-silane coupling agents. The inorganic-organic copolymers can be prepared through the reaction of silane-coupling agents containing hydroxy groups and silane groups with organic metal compounds. The inorganic-organic copolymers are of high transparency as well…
US 6197570 Norcardia sp. CKYS2 ((KCTC 0432BP) capable of desulfurizing fossil fuel
The present invention relates to Nocardia sp. CYKS2 (KCTC 0432 Br) capable of selective removal of organically bound sulfurs from carbonaceous fossil fuel such as petroleum and coal by cleaving bonds between carbon and sulfur atoms in the said sulfur-containing organic compounds, and a method for biological desulfurization using this strain at the…
US 6316594 Antimicrobial peptide isolated from parasilurus asotus and its uses
Disclosed is a novel antimicrobial peptide, named parasin I, which is isolated from catfish. Catfish produce a strong antimicrobial peptide in the epithelial mucosal layer upon epidermal injury to protect against the invasion of microorganisms. It is 2000.4 Da in molecular mass and consist of 19 amino acid residues, represented by…
The present invention relates to a carbon fiber-reinforced composite material having a high toughness against delamination, which is prepared by regulating the rate of cure reaction of a thermosetting resin used as a matrix and the rate of dissolving a toughening agent in the matrix to form a morphology gradient depending on a concentration…
The present invention relates to a method for manufacturing a transition metal-carbon nanotube hybrid material using nitrogen as a medium. The present invention is characterized in that nitrogen-added carbon nanotube is grown in the presence of metal catalyst particles by reacting an hydrocarbon gas with a nitrogen gas by a chemical vapor…
US 8017413 Field emission array having carbon microstructure and method of manufacturing the same
Provided is a method for manufacturing a field emission array with a carbon microstructure. The method includes: a photomask attachment step of attaching a photomask with a pattern groove to one surface of a transparent substrate; a photoresist attachment step of attaching a negative photoresist to one surface of the photomask; an exposure step of…
Disclosed are a novel hydrogen storage material with enhanced hydrogen storage capacity prepared by doping an organic framework material with light metal cations, and a method of using the same for hydrogen storage. The present inventive material has at least one phenyl group at each face of a triangular building unit, which is doped with metal…
US 8105977 Counterfeit Prevention Paper and Manufacturing Method thereof
The present invention relates to a counterfeit prevention paper and manufacturing method thereof, and more particularly to currency, securities, official document and several certificates, etc.
US 8119090 Nickel-carbonitride Spheres and Method of Making the same
Disclosed is a method for preparation of a nickel-carbonitride sphere, which includes preparing a melamine-formaldehyde resin, adding a nickel salt and a surfactant to the melamine-formaldehyde resin to prepare a nickel-melamine resin mixture, and conducting spray pyrolysis for the mixture to produce nickel-containing powder including…
The present invention provides a method for discriminating an organic farmland from a conventional farmland, comprising; (a) measuring an amount of nitrogen isotope in a soil sample of a farmland; (b) calculating a nitrogen isotope index according to the formula (I) using the resultant nitrogen isotope value and (c) determining whether the…
A solvent-free polymer electrolyte and a secondary battery employing the electrolyte are provided. The electrolyte includes: a porous film, including a first polymer and a second oligomer, the first polymer being at least one selected from the group consisting of poly (vinylidene fluoride-co-hexafluoropropylene) copolymers,…
A flat light source structure includes an upper substrate made of a light transmitting material; a lower substrate separated from the upper substrate by a distance; a barrier rib for maintaining the distance, thereby defining a discharge space filled with a discharge gas; a phosphor coated on at least one of the inner surfaces of the upper…
US 8124298 Method of Fabricating a Chromium Nitride Coated Separator
Provided are a metallic separator for fuel cell in which a Cr.sub.2N layer is formed on the surface of base metals, and a method of fabricating the metallic separator or fuel cell. The method comprises: plating chromium layer on the surface of the base metal; and forming a Cr.sub.2N layer by nitriding the chromium-plated layer in properly selected…
Disclosed is a method for fabricating a high-performance field-effect transistor biosensor for diagnosing cancers using micro conductive polymer nanomaterials funtionalized with anti-VEGF aptamer. Disclosed is a high-sensitivity field-effect transistor biosensor for diagnosing cancers using a micro conductive polymer nanomaterial transistor array…
A bone graft substitute using magnesium substituted calcium phosphate compounds and a method of manufacturing the same is provided in which the bone graft substitute is used for recovering bones damaged due to a bone fracture. The method of manufacturing a bone graft substitute includes the steps of mixing powdered calcium pyrophosphate and a…
The present invention discloses dielectric ceramic compositions having dielectric properties suitable for high frequency bands, such as microwave and millimetric wave, and a method for manufacturing multilayered components, such as chip LC filters, chip duplexers, and dielectric filters for PCS, using the dielectric ceramic compositions. The…
US 6528445 Dielectric Ceramic Composition and Method for Manufacturing the same
Disclosed is a dielectric ceramic composition suitable for use in planar or multilayer type electronic parts containing inner conductors, for the fabrication of which simultaneously sintering base materials and conductors is required. This ceramic composition is composed of (1-x)Ba.sub.3 Ti.sub.4 Nb.sub.4 O.sub.21 -(x)Ba(or Sr)Nb.sub.2 O.sub.6…
US 6316376 Dielectric Ceramic Compositions and Method of Preparation therefor
A dielectric ceramic composition comprising 3BaO.5TiO.sub.2.3Nb.sub.2 O.sub.5 (Ba.sub.3 Ti.sub.5 Nb.sub.6 O.sub.28) as a main component and at least one selected from, as a minor component, (b-1) sintering auxiliary selected from the group consisting of a boron-containing glass compound, CuO, ZnO or mixtures thereof, or (b-2) additives selected…
Disclosed are a solid-solution powder, a method for preparing the solid-solution powder, a cermet powder including the solid-solution powder, a method for preparing the cermet powder, a cermet using the cermet powder and a method to prepare the cermet. According to the present invention, the problem of low toughness due to high hardness that…
US 8157986 Magnetic Nanoparticle Complex
A magnetic nanoparticle complex includes a magnetic nanoparticle; and a ligand associated with the magnetic nanoparticle, the ligand including a functional group capable of combining with an acid component or a conjugate base of the acid component, in an oil. A method for preparing a magnetic nanopartide complex, includes preparing a pre-ligand…
The present invention relates to a PVC product containing cyclodextrin derivative particles and capable of suppressing migration of a plasticizer and a method for manufacturing the same, which includes (S1) preparing cyclodextrin derivative particles, in which a hydroxyl functional group is replaced by a predetermined compound; (S2) inputting the…
US 8110170 Conductive Polymer-carbon Nanotube Composite and Manufacturing Method thereof
Provided are a conductive polymer-carbon nanotube composite including a carbon nanotube and a conductive polymer filled therein, and a method of manufacturing the same. The conductive polymer-carbon nanotube composite where a conductive polymer is filled in a carbon nanotube is manufactured by introducing a monomer of the conductive polymer into…
The present invention provides norbornene-based copolymers for which one monomer is at least selected from a group consisting of norbornene and dicyclopentadiene, and the other from norbornene-based comonomers of Formula 1 shown below: ##STR00001## In Formula 1, R.sub.1, R.sub.2 and a are defined in this specification. The present invention…
US 7528276 Process for Preparing the Intermediate Compounds for PPAR .alpha. ligands
The present invention provides a process for preparing the compounds of formula (II) according to a single reaction, which is an important intermediate compound for synthesizing GW7647 (III) and GW9578 (IV) activating Peroxisome Proliferator Activated Receptor (hPPAR .alpha.).
Provided is a method of forming a nanostructure having a nano-sized diameter and a high aspect ratio through a simple and economical process. To form the nanostructure, a polymer thin film is formed on a substrate and a mold is brought to contact the polymer thin film. Then, a polymer patterning is formed to contact the background surface of an…
Disclosed are plasticizer compositions including cyclodextrin derivatives, a flexible PVC composition with suppression of the migration of a plasticizer containing the same, and a manufacturing method thereof. The manufacturing method of the flexible PVC composition of the present invention includes steps of (S1) preparing cyclodextrin…
US 7525001 Process for Preparation of 2,6-dialkyltetralin
The present invention provides a novel process for highly selective preparation of 2,6-dialkyltetralin, a key precursor for 2,6-dimethylnaphthalene (2,6-DMN), which does not require an extra step for purifying various isomers obtained from the conventional processes for 2,6-DMN. The present invention is advantageous to improve the synthetic yield,…
Disclosed are a solid-solution powder, a method for preparing the solid-solution powder, a cermet powder including the solid-solution powder, a method for preparing the cermet powder, a cermet using the cermet powder and a method to prepare the cermet. According to the present invention, the problem of low toughness due to high hardness that…
Disclosed herein are a self-foamed porous ceramic composition and a method for making a porous ceramic using the self-foamed porous ceramic composition. The self-foamed porous ceramic is obtained by fabricating a glass consisting of 41.about.47 mole % of calcium oxide (CaO), 41.about.47 mole % of silica (SiO.sub.2) and 6.about.18 mole % of borate…
The present invention discloses dielectric ceramic compositions having dielectric properties suitable for high frequency bands, such as microwave and millimetric wave, and a method for manufacturing multilayered components, such as chip LC filters, chip duplexers, and dielectric filters for PCS, using the dielectric ceramic compositions. The…
US 6528445 Dielectric Ceramic Composition and Method for Manufacturing the same
Disclosed is a dielectric ceramic composition suitable for use in planar or multilayer type electronic parts containing inner conductors, for the fabrication of which simultaneously sintering base materials and conductors is required. This ceramic composition is composed of (1-x)Ba.sub.3 Ti.sub.4 Nb.sub.4 O.sub.21 -(x)Ba(or Sr)Nb.sub.2 O.sub.6…
US 6316376 Dielectric Ceramic Compositions and Method of Preparation therefor
A dielectric ceramic composition comprising 3BaO.5TiO.sub.2.3Nb.sub.2 O.sub.5 (Ba.sub.3 Ti.sub.5 Nb.sub.6 O.sub.28) as a main component and at least one selected from, as a minor component, (b-1) sintering auxiliary selected from the group consisting of a boron-containing glass compound, CuO, ZnO or mixtures thereof, or (b-2) additives selected…
Disclosed are a solid-solution powder, a method for preparing the solid-solution powder, a cermet powder including the solid-solution powder, a method for preparing the cermet powder, a cermet using the cermet powder and a method to prepare the cermet. According to the present invention, the problem of low toughness due to high hardness that…
US App 20100183858 Calcium Phosphate Ultrathin Films and a Method for Preparing them
An ultrathin film of calcium phosphate crystals having a thickness of 200 nm or less on a surface of a solid substrate, and a method for preparing the same are disclosed. Further, an amorphous dendritic extension used as an intermediate material in preparation of the ultrathin film of calcium phosphate and a method for forming the same are…
US App 20100047564 Carbon Nanotube Composites
Composites comprising carbon nanotubes are provided. In some embodiments, the composite may include at least one metal/carbon nanotube layer disposed between at least two metal layers, where the metal/carbon nanotube layer includes metal and a plurality of carbon nanotubes distributed in selected regions of the metal. In other embodiments, the…
Disclosed herein is a light-responsive photocatalyst composition, which is a composite oxide semiconductor containing tungsten, and which can efficiently absorb visible light emitted from the sun and light emitted from interior lamps, such as fluorescent lamps, etc., and a method of preparing the light-responsive photocatalyst composition. The…
Disclosed is black phosphorus or black phosphorus-carbon composite, which is very suitable for an anode material of lithium rechargeable battery. The black phosphorus or black phosphorus-carbon composite is prepared by using high energy ball-milling, which is easy and efficient way in transforming amorphous red phosphorus into orthorhombic black…
US 7211331 Preparation of Nano-sized Organic-Inorganic Composite Material
A nano-sized composite material of a polymer resin and a layered clay composite having improved properties can be prepared by a simple and economic process comprising applying an electric field thereto.
A synthetic method of fabricating highly crystalline and monodisperse nanoparticles of metals, multi-metallic alloys, monometallic oxides and multi-metallic oxides without a size selection process are disclosed. A typical synthetic method comprises the steps of, synthesis of a metal surfactant complex from the reaction of a metal precursor and a…
PCT KR2010-008690 Absorbable Material, and Implant Fixture and Implant using same
The present invention relates to a nano-hybrid material, an implant fixture and an absorbable implant including same wherein an inorganic nanoparticle substance is dispersed in an organic substance and bonded to the organic substance.
The present invention relates to a method for producing ethanol from xylose using recombinant Saccharomyces cerevisiae resulting in an improved production yield and productivity.
Disclosed is a method for producing ethanol at a high yield and high production efficiency from xylose using recombinant Saccharomyces cerevisiae.
PCT KR2010-007547 Composition for Preventing or Treating Cancer, Containing LETM1
The present invention relates to a composition for preventing or treating cancer comprising LETM1 or a gene encoding the same, and the composition can be used as a successful therapeutic approach for inhibiting the proliferation and progression of cancer.
US App 20120088731 Method for Treating Parkinson’s Disease Trough the Cntrol of the VDAC1 Protein
The present invention relates to a pharmaceutical composition for treating Parkinson’s disease including a VDAC1 protein controller.The present invention is expected to be capable of providing a method for fundamentally treating Parkinson’s disease by preventing abnormal mitochondrial function and/or restoring same.
The present invention relates to a phosphatidylinositol 3-kinase activity regulator comprising the fifth zinc finger domain of FOG2 capable of inducing cancer cells to die.
The present invention relates to a composition for preventing, relieving and treating diseases caused by expression or over-activation of LXRα or SREBP-1 such as fatty liver, hypertriglyceridemia, hyperreninemia, renin-induced hypertension, aldosteronism, adrenoleukodystrophy, glomerulosclerosis, proteinuria, renal failure, and the…
The present invention relates to a new selenazole derivative which activates a peroxisome proliferator activated receptor (PPAR) for treatment of obesity, hyperlipedemia, fatty liver, arterosclerosis and diabetes mellitus.
The present invention relates to a peptide compound which is prepared on the basis of a C-terminal sequence of TSA56 of Orientia tsutsugamushi, and a pharmaceutical composition for relieving scrub typhus using the same.
US App 20140170078 T2 MRI Contrast Agent for Cell Contrast and Preparation thereof
T2 MRI contrast agent for cell contrast, comprising magnetic nanoparticles with ferrimagnetism at room temperature.