Assignee: Yukong Limited

Location: Seoul, KR
No. of patents: 25

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Number	Title	Issue Date
6031119	Polyalkylene guanidine salts or polyalkylene biguanidine salts having a branched silane compound, method for preparing same and uses thereof Polyalkylene guanidine salts or polyalkylene biguanidine salts having a branched silane compound of formula I show excellent antimicrobial activity and can be applied to various materials including fibers, wood, paper, glass, resins and metals: ##STR...	02/29/2000
5955499	Phenylalkylaminoalcohol carbamates and process for preparing the same O-carbamoyl-(D/L )-phenylalaninol represented by structural formula I is pharmaceutically useful to treat diseases of the central nervous system, which is prepared by a characteristic process comprising the steps of: treating phenylalaninol with benzyl ch...	09/21/1999
5935997	O-thiocarbamoyl-aminoalkanol compounds, their pharmaceutically useful salts and process for preparing the same The present invention relates to O-thiocarbamoyl-aminoalkanol compound represented by the following structural formula (VI), (VIII) and (IX) which are a racemic or enantiomerically enriched and pharmaceulically acceptable salts thereof to treat diseases o...	08/10/1999
5932181	Natural gas-using hydrogen generator A natural gas-using hydrogen generator is provided which is able to produce high purity hydrogen from natural gas and water. The generator comprises a desulfurization reactor, a reformer and a PSA. The natural gas-using hydrogen generator also comprises a...	08/03/1999
5908769	Solvent-free method for reacting short-chain alcohols and acids using C. antarctica lipase immobilized to acrylic resin An ester compound is prepared with a greatly improved efficiency by reacting a liquid alcohol with a liquid organic acid at a temperature of about 30 to 70° C. in the presence of a lipase without adding any solvent. In particular, short chain acids and a...	06/01/1999
5892088	Sulfamate compound containing N-substituted carbamoyl group and method for preparing the same There are disclosed novel sulfamate compounds containing N-substituted carbomoyl group including their racemates and (R)- and (S)-optical isomers represented by Formulas I, II and III, pharmaceutically useful for the prophylaxis and treatment of the disor...	04/06/1999
5882932	Continuous quick measurement of biochemical oxygen demand and apparatus A continuous, quick measurement method of BOD, and an apparatus therefor is disclosed. The apparatus comprises a sample tank in which a sample is prepared suitably for the measurement, a reactor in which microorganisms maintain their activity, a medium re...	03/16/1999
5861461	Biodegradable plastic composition, method for preparing thereof and product prepared therefrom A plastic composition superior in both biodegradability and physical properties, comprises a matrix resin which is a blend of polyethylene and a biodegradable aliphatic polyester, starch, a coupling agent, a radical initiator, a starch plasticizer, a star...	01/19/1999
5854283	Halogen substituted carbamate compounds from 2-phenyl-1,2-ethanediol The optically pure forms of monoocarbamates of halogenated 2-phenyl-1,2-ethanediol and dicarbamates of 2-phenly-1,2-ethaniediol have been found to be effective in the treatment of disorders of the central nervous system, especially as anti-convulsive or a...	12/29/1998
5849772	Carbamate compounds and processes for preparing the same (S)-2-Aryl-1,3-propanediol monocarbamate and its intermediate, (S)-3-acetoxy-2-aryl-propanol carbamate, represented by the following formulas I and II, respectively, have pharmaceutically useful activity against for central nervous system disorders includ...	12/15/1998
5840643	Recovery of oxidation catalysts used for the production of trimellitic acid A method for separating oxidation catalysts used for producing trimellitic acid, which comprises the steps of: adding water to a reactor effluent in a volume ratio of water to the reactor effluent of 0:1 to 11:1, the reactor effluent being in a slurry sta...	11/24/1998
5817858	Carbamate compounds having N-substituted thiocarbamoyl group and process for preparing the same There is disclosed 3-N-substituted thiocarbamoyl-2-phenyl-1,3-propanediol carbamate, represented by the following structural formula I, that is very effective for prophylaxis and treatment of central nervous system disorders including nervous muscular pai...	10/06/1998
5756817	O-carbamoyl-phenylalaninol compounds, their pharmaceutically useful salts and process for preparing the same The present invention relates to a racemic or enantiomerically enriched O-carbamoyl-phenylalaninol compound represented by the following structural formula V and pharmaceutically acceptable salts thereof to treat diseases of the central nervous system: ...	05/26/1998
5714545	Thermoplastic elastomeric composition and process for preparing the same A thermoplastic elastomeric composition, which comprises liquid 1,2-polybutadiene, EPDM rubber, a polyolefin resin, a curative system consisting of phenolic resin and peroxide, and a co-curing agent, the 1,2-polybutadiene and EPDM rubber being at least pa...	02/03/1998
5705640	O-carbamoyl-(d)-phenylalaninol compounds, their pharmaceutically useful salts and process for preparing the same The present invention relates to O-carbamoyl-(D)-phenylalaninol compound represented by the following structural formula V and pharmaceutically acceptable salts thereof to treat diseases of the central nervous system: ##STR1## wherein R1 a...	01/06/1998
5698588	Halogen substituted carbamate compounds from 2-phenyl-1,2-ethanediol The pure enantiomeric forms, as well as enantiomeric mixtures excluding the racemic mixture of monocarbamates of 2-phenyl-1,2-ethanediol substituted with more than one halogen atom on the phenyl ring and dicarbamates of 2-phenyl-1,2-ethanediol substituted...	12/16/1997
5654461	Sulfamate compound containing carbamoyl group 3-O-Carbamoyl-2-phenyl-1,3-propanediol sulfamate racemate, represented by the following structural formula I: ##STR1## and its (R)- and (S)-optical isomers, which are very effective for prophylaxis and the treatment of central nervous system disorder...	08/05/1997
5627300	Carbamate compounds containing thiocarbamoyl group and process for preparing the same There are disclosed 3-thiocarbamoyl-2-phenyl-1,3-propandiol carbamate racemate, represented by the following structural formula I: ##STR1## and its (R)- and (S)- optical isomers and intermediates thereof, which are very effective for prophylaxis and ...	05/06/1997
5627282	Process for the preparation of optically pure 1,2,3,4-tetrahydro-3-isoquinolinecarboxylic acid and its derivatives This invention relates to the preparation of optically pure tetrahydro-3-isoquinolinecarboxylic acid derivative of formula (III) which comprises the reaction of optically pure phenylalanine derivative of formula (I) with a formaldehyde precursor, such as ...	05/06/1997
5580442	Method for producing feedstocks of high quality lube base oil from unconverted oil of fuels hydrocracker operating in recycle mode A process is disclosed for producing feedstocks for manufacturing high quality lube base oil utilizing unconverted oil, which is produced from a fuels hydrocracker unit. The first step of the process is the distillation of an atmospheric residue under vac...	12/03/1996
5503645	Compound having improved low temperature fluidity, and a middle distillate composition and a petroleum fuel composition containing the same The present invention improves the low temperature flow property of a fuel oil having a boiling point of 120°-150° C. by adding a novel compound prepared by reacting pri-, sec- or tert-aliphatic amine containing alkyl group of 1-30 carbon atoms with ...	04/02/1996
5468263	Fuel composition containing alkylphenyl poly(oxyalkylene) polyamine acid ester The present invention relates to an alkylphenyl poly(oxyalkylene) polyamine acid ester fuel detergent effective for controlling deposit generated in an automobile engine, prepared by reacting polyamine and alkylphenyl poly(oxyalkylene) maleate derivative ...	11/21/1995
5461094	Biodegradable polyethylene composition chemically bonded with starch and a process for preparing thereof The present invention relates to a biodegradable film prepared by chemical bonding of starch and polyethylene chains using polyethylene, which is polyolefin having the most widest general application, coupling agent such as maleic anhydride, methacrylic a...	10/24/1995
5461093	Biodegradable polyethylene composition chemically bonded with starch and a process for preparing thereof In the present invention, the lowering of physical properties is minimized by bonding matrix resin and starch chemically using a coupling agent in the presence of an organic acid catalyst, at the same time lowering of the production cost is achieved by si...	10/24/1995
5239000	Thermoplastic elastomer and process for preparation Thermoplastic elastomers in which low molecular weight ethylene/propylene/nonconjugated diene rubber ("liquid" EPDM rubber) replaces part of the high molecular weight EPDM rubber used in conventional blends exhibit better tension set properties than ...	08/24/1993

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Assignee: Yukong Limited