| Patent Number |
Title Of Patent |
Date Issued |
| 7405070 |
Method for preparing (s)-indoline-2-carboxylic acid and (s)-indoline-2-carboxylic acid methyl es |
July 29, 2008 |
| Disclosed is a method for preparing (S)-indoline-2-carboxylic acid and (S)-indoline-2-carboxylic acid methyl ester using an inexpensive industrially available enzyme capable of assuring superior optical purity and yield. At this time, the hydrolytic enzyme is selected from the group |
| 7361328 |
Method of preparing ZSM-5 using variable temperature without organic template |
April 22, 2008 |
| Disclosed is a method of preparing ZSM-5 having substantially 100% crystallinity by using variable temperatures in the absence of an organic template, characterized in that a reaction mixture having a molar composition of M.sub.2O/SiO.sub.2 (M: alkali metal ion) of 0.07-0.14, H.sub.2 |
| 7332531 |
Microporous high density polyethylene film |
February 19, 2008 |
| Disclosed is a microporous high density polyethylene film for a battery separator and a method of producing the same. The microporous high density polyethylene film includes high density polyethylene with a weight average molecular weight of 2.times.10.sup.5-5.times.10.sup.5, contain |
| 7304195 |
Process for increasing production of benzene from hydrocarbon mixture |
December 4, 2007 |
| A process for increasing the production of benzene from a hydrocarbon mixture. A process for producing an aromatic hydrocarbon mixture and liquefied petroleum gas (LPG) from a hydrocarbon mixture, and a solvent extraction process for separating and recovering polar hydrocarbons from |
| 7301063 |
Process for increasing production of light olefin hydrocarbon from hydrocarbon feedstock |
November 27, 2007 |
| A process for increasing the production of light olefin hydrocarbons from a hydrocarbon feedstock. A process for producing an aromatic hydrocarbon mixture and liquefied petroleum gas (LPG) from a hydrocarbon mixture, and a process for producing a hydrocarbon feedstock which is capable of |
| 7297831 |
Process of preparing aromatic hydrocarbons and liquefied petroleum gas from hydrocarbon mixture |
November 20, 2007 |
| Disclosed is a process of preparing aromatic hydrocarbons and liquefied petroleum gas (LPG) from a hydrocarbon mixture, in which a non-aromatic compound in the hydrocarbon feedstock mixture is converted into a gaseous material having a large amount of LPG through hydrocracking, and an |
| 7214793 |
Method of preparing 10H-dibenzo[b,f][11,4]thiazepin-11-one |
May 8, 2007 |
| Disclosed is a method of preparing 10H-dibenzo[b,f][1,4]thiazepin-11-one, including reacting dithiosalicylic acid with 1-chloro-2-nitrobenzene in a basic aqueous solution in the presence or absence of a reducing agent, to prepare 2-(2-nitrophenylsulfuryl)benzoic acid; subjecting the |
| 7189289 |
Cleaning agent and method for cleaning heater tubes |
March 13, 2007 |
| Disclosed is a cleaning agent for heater tubes, which is capable of eliminating deposits such as soot particulates in tubes installed in industrial heaters that typically use oil, coal or gas. The cleaning agent of the present invention is prepared by formulating a chemical compositi |
| 6991914 |
Silent marker for an oil product and associated detection method |
January 31, 2006 |
| A silent marker, method of marking a petroleum product with the silent marker, and method of detecting the silent marker. The marker is an ester derivative of fluorescent material, and the silent marker may be detected by measuring the fluorescence generated from the selective hydrolysis |
| 6946020 |
Hydrogen purification module |
September 20, 2005 |
| A compact hydrogen purification module capable of affording high-grade purified hydrogen, easy assembly and easy control of size is disclosed. The module includes a plurality of unit cells. Each of the unit cells includes two metal membranes permeable only by hydrogen, a metal support |
| 6896709 |
Miniature fuel reformer and system using metal thin film |
May 24, 2005 |
| A miniature fuel reformer utilizes a metal thin film and includes a plurality of unit modules connected together. Each module has a cylindrical inner housing with top and bottom walls defining a hydrogen separation reaction chamber, an outer housing surrounding and radially spaced fr |
| 6870073 |
Process for separating normal paraffins from hydrocarbons and applications for the separated hyd |
March 22, 2005 |
| There is provided with a process for separating normal paraffins from hydrocarbons of C.sub.5-10 using zeolite molecular sieve 5A, which comprises the steps of (a) selective adsorption (b) cocurrent purge (c) countercurrent desorption. The present process employs butane for purge and |
| 6867340 |
Disproportionation/transalkylation of aromatic hydrocarbons |
March 15, 2005 |
| A catalyst for the disproportionation/transalkylation of various hydrocarbons consists of a carrier and a metal component supported on the carrier. The carrier comprises 10 to 80 wt % of mordenite and/or beta type zeolite with a mole ratio of silica/alumina ranging from 10 to 200; 0 to |
| 6852361 |
Method of on-line coating of a film on the inner walls of the reaction tubes in a hydrocarbon py |
February 8, 2005 |
| A method of on-line coating a coat film on the inner wall of a reaction tube in a hydrocarbon pyrolysis reactor for preventing the formation and the deposit of coke on the inner walls. This method comprises the steps of vapor depositing a mixed solution of a metal alkoxide and a chromic |
| 6841688 |
Method of preparing optically pure (R)- or (S)- tetrahydrofuranyl ketone |
January 11, 2005 |
| Disclosed is a method of preparing an optically pure (R)- or (S)-tetrahydrofuranyl ketone. By such a method, (R)- or (S)-2-tetrahydrofuran amide is converted to (R)- or (S)-2-tetrahydrofuran nitrile through dehydration in the presence of a dehydrating agent and an amine base. Then, t |
| 6841569 |
Carbamates of 2-heterocyclic-1,2-ethanediols |
January 11, 2005 |
| Carbamate compounds of 2-heteroaryl-1,2-ethanediol are described. The compounds are effective in the treatment of disorders of the central nervous system, especially as anti-convulsive or anti-epileptic agents. |
| 6803340 |
Catalyst for removing dioxin and preparation method thereof |
October 12, 2004 |
| A catalyst for removing dioxin and a preparation method thereof. The catalyst is prepared by recycling a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises an alumina support (preferably, gamma alumina) with a large |
| 6800585 |
Catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the sam |
October 5, 2004 |
| Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. Useful for the removal of nitrogen oxides is a catalyst prepared using spent catalysts having been absorbed with vanadium, nickel and sulfur in the hydro-desulfurization |
| 6790344 |
Liquid-phase adsorption process for removing and concentrating heteroatom compounds in hydrocarb |
September 14, 2004 |
| Disclosed is a liquid phase adsorption process for removing and concentrating heteroatom compounds in hydrocarbons (HCH), comprising the steps of adsorption, copurging and regeneration. In the adsorption step, a liquid hydrocarbon stream is fed to an adsorber, which adsorbs HCH and r |
| 6783848 |
Matte biaxially oriented polypropylene film with improved matte property and processability |
August 31, 2004 |
| Disclosed is a matte biaxially oriented polypropylene film having improved matte characteristic and processability. The film comprises one or more surface layers made of a composition comprising 100 parts by weight of a resin blend of 40-60 wt % of polyethylene (I) and 60-40 wt % of |
| 6747166 |
Process for preparing carotenoid polyene chain compounds and intermediates for preparing the sam |
June 8, 2004 |
| The present invention provides an intermediate compound used for synthesis of polyene chain structure, that is an important moiety of carotenoid compounds, a process for preparing the same, and carotenoid polyene chain compounds prepared by using the intermediate, and, in particular, a |
| 6673740 |
Method for preparing a catalyst for reduction of nitrogen oxides |
January 6, 2004 |
| The catalyst is prepared by recycling a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises an alumina support with a large specific surface area impregnated with low contents of vanadium and high contents of molybdenum. |
| 6673231 |
Method for removing sludge in crude oil tank and recovering oil therefrom |
January 6, 2004 |
| Disclosed is a method for removing sludge in a crude oil storage tank by use of thermal oil discharged from a distillation tower of an oil refinery, such as atmospheric residue, vacuum residue, or vacuum gas oil, and recovering oil having various applications by separating inorganics |
| 6635792 |
Process for producing aromatic hydrocarbon compounds and liquefied petroleum gas from hydrocarbo |
October 21, 2003 |
| Disclosed are a process for producing aromatic hydrocarbon compounds and liquefied petroleum gas (LPG) from a hydrocarbon feedstock having boiling points of 30-250.degree. C. and a catalyst useful therefor. In the presence of said catalyst, aromatic components in the hydrocarbon feed |
| 6602818 |
Method for preparing a catalyst for selective catalytic reduction of nitrogen oxides |
August 5, 2003 |
| Disclosed are a catalyst for selective catalytic reduction of nitrogen oxides and a method for preparing the same. The catalyst is prepared using a spent catalyst discharged from a hydro-desulfurization process of an oil refinery in which the spent catalyst comprises vanadium, nickel, |
| 6586597 |
Continuous process for the preparation of optically pure decahydroisoquinolinecarboxamide |
July 1, 2003 |
| The present invention relates to a continuous process for the preparation of [3S-(3.alpha., 4a.beta., 8a.beta.)]-N-tert-butyl-decahydro-3-isoquinolinecarboxamide, an intermediate useful in the synthesis of compounds for the treatment of viral diseases, from the reduction of N-ter |
| 6514563 |
Method of on-line coating film on the inner walls of the reaction tubes in a hydrocarbon pyrolys |
February 4, 2003 |
| A method of on-line coating a coat film on the inner wall of a reaction tube in a hydrocarbon pyrolysis reactor for preventing the formation and the deposit of coke on the inner walls. This method comprises the steps of vapor depositing a mixed solution of a metal alkoxide and a chromic |
| 6509504 |
Method for the production of serinol |
January 21, 2003 |
| Disclosed is a method for preparing serinol (2-amino-1,3-proanediol). From nitromethane, para-formaldehyde and sodium hydroxide, 1-nitro-1,3-propanediol sodium salt is prepared as a medical intermediate. In a fixed bed, this intermediate is allowed to undergo the continuous hydrogena |
| 6490029 |
Automatic analysis method of crude petroleum oils using spectroscopy |
December 3, 2002 |
| Disclosed is an automatic analysis method of crude oils, using spectroscopy. A near infrared spectroscopic analysis apparatus is combined with an ordinary distillation apparatus, so as to analyze the physical properties of each oil distillate as soon as it is separated from crude oil |
| 6485578 |
Chemical cleaning process for removing fouling |
November 26, 2002 |
| Disclosed is a chemical cleaning process for removing fouling from process lines of oil refining or petrochemical plants. The process lines are in an on-line state and a chemical cleaning agent is circulated through the process lines to remove the fouling. It can effectively recover the |
| 6455302 |
Method for optically resolving a racemic .alpha.-substituted heterocyclic carboxylic acid using |
September 24, 2002 |
| Disclosed is a method for optically resolving a racemic .alpha.-substituted heterocyclic carboxylic acid (.alpha.-HCCA) by taking advantage of enantioselectivity of enzymes. .alpha.-HCCA is reacted with alcohol to give a racemic .alpha.-HCCA ester, which is then reacted with an enzyme |
| 6441200 |
Method for preparing DL-.alpha.-tocopherol with a high yield and high purity |
August 27, 2002 |
| Disclosed is a method for preparing DL-.alpha.-tocopherol through the condensation of isophytol or phytol derivatives and trimethylhydroquinone (TMHQ) using a catalyst system comprising a divalent metal halogen compound, silica gel and/or silica-alumina, and a Bronsted acid. Isophytol |
| 6440721 |
Method for preparing an R- or S-form of .alpha.-substituted heterocyclic carboxylic acid and a c |
August 27, 2002 |
| Disclosed is a method for preparing an R- or S-forms of .alpha.-substituted heterocyclic carboxylic acid (.alpha.-HCCA) and a counter enantiomeric form of .alpha.-substituted heterocyclic carboxylic acid ester thereto by use of an enzyme. A racemic .alpha.-HCCA is reacted with alcohol to |
| 6429319 |
Continuous process for the production of optically pure (S)-beta-hydroxy-gamma-butyrolactone |
August 6, 2002 |
| Disclosed is a process for the production of optically pure (S)-beta-hydroxy-gamma-butyrolactone through the hydrogenation of substituted carboxylic acid derivatives. A solution containing 1 to 50% by weight of a substituted carboxylic acid derivative is fed at a WHSV of 0.1 to 10 h. |
| 6395947 |
Method for preparing diarylethane |
May 28, 2002 |
| A method for preparing diarylethane is disclosed. Alkylation is carried out in a continuous type process at 100-300.degree. C. under a pressure of 1-45 kg/cm.sup.2 G in the presence of a solid acid catalyst while a reactant mixture comprising alpha-methylbenzylalcohol and at least one |
| 6384245 |
Method for preparing DL-.alpha.-tocopherol with high yield |
May 7, 2002 |
| Disclosed is a method for preparing DL-.alpha.-tocopherol with a high yield through the condensation of isophytol or phytol derivatives with trimethylhydroquinone (TMHQ) in the presence of a Zn--Al heterogeneous catalyst system. At 80 to 120.degree. C., the condensation is carried out |
| 6380174 |
Slime-removing composition for paper manufacture and method of controlling slime using the same |
April 30, 2002 |
| Disclosed is a slime-removing composition comprising polyhexamethyleneguanidine phosphate and 2-bromo-2-nitro-1, 3-propanediol, represented by the following formulas I and II, respectively. With a synergistic effect, the composition has potent sterilizing activity against a broad spe |
| 6319975 |
Composition for air permeable film of high processability and permeability and production of air |
November 20, 2001 |
| An air-permeable film is prepared by mono-axially drawing a composition comprising a linear low density polyethylene resin having a mw. distribution from 5 to 20, 1 to 100 parts by weight of propylene resin, 1 to 30 parts by weight of an ethylene-propylene copolymer, 1 to 30 parts by |
| 6248230 |
Method for manufacturing cleaner fuels |
June 19, 2001 |
| A method is provided for manufacturing cleaner fuels, in which NPC (Natural Polar Compounds), naturally existing in small quantities within various petrolic hydrocarbon fractions, are removed from the petrolic hydrocarbon fractions ranging, in boiling point, from 110 to 560.degree. C. an |
| 6222051 |
Alpha-tocopherol 4-aminobenzoic acid ester compounds and method for preparing the same |
April 24, 2001 |
| Alpha-tocopherol 4-aminobenzoate compounds, represented by formula (I), are prepared by the esterification of alpha-tocopherol with 4-aminobenzoic acid. The esters are converted into the element compounds in vivo, so that they have alpha-tocopherol's biological effect including antioxida |
| 6187109 |
Cleaning composition for removing fouling and a method for using the same |
February 13, 2001 |
| Disclosed is a cleaning composition useful for dislodging fouling from process lines of oil refining or petrochemical plants and a cleaning method using the composition. The cleaning composition comprises 0.01 to 1 wt % of a C8 aromatic compound, 75 to 85 wt % of a C9 aromatic compound |
| 6171566 |
Selective catalytic reduction for the removal of nitrogen oxides and catalyst body thereof |
January 9, 2001 |
| A selective catalytic reduction body for the removal of nitrogen oxides (NO.sub.x), comprising about 5 to 80% by weight of vanadium, about 0 to 60% by weight of molybdenum, about 0 to 20% by weight of nickel and about 0 to 20% by weight of cobalt, which catalytic body is economically |
| 6162644 |
Method for controlling and optimizing xylene isomer separation and isomerization process using n |
December 19, 2000 |
| A method for and an apparatus for controlling and optimizing a xylene isomer separation and isomerization process, in which near infrared light of a wavelength ranging from 1,100 nm to 2,500 nm is transmitted through samples obtained at different stages of the process from raw materials |
| 6156401 |
Oxygen barrier resin composition and product containing the same |
December 5, 2000 |
| Disclosed are an oxygen barrier resin composition and products containing the resin. The resin composition comprises 20 to 80 wt % of an ethylene-vinyl alcohol copolymer, 5 to 79 wt % of an ethylene copolymer, and 1 to 30 wt % of a compatibilizer obtained between a random copolymer o |
| 6147266 |
Method for producing acetylene alcohol compounds using continuous process |
November 14, 2000 |
| There is disclosed a method for producing acetylene alcohol compounds in a continuous process, which are produced via ethynylation in which ketones containing a group --CH.sub.2 COCH.sub.2 --, are condensed with acetylenes at a temperature of about 20 to 50.degree. C. under a pressure of |
| 6140532 |
O-carbamoyl-phenylalaninol having substituent at benzene ring, its pharmaceutically useful salts |
October 31, 2000 |
| O-Carbamoyl-phenylalaninol having substituent at benzene ring, represented by the general formula I, and pharmaceutically useful salts thereof, which are useful for the prophylaxis and treatment of CNS disorder including depression and anxiety, are disclosed: ##STR1## wherein R i |
| 6133374 |
Polypropylene resin compositions |
October 17, 2000 |
| A polypropylene resin composition comprises (1) 40 to 99% by weight of a polypropylene resin; (2) 1 to 60% by weight of an ethylene/alpha-olefin copolymer elastomer; (3) 20 to 50 parts by weight of a low molecular weight polypropylene resin modified with unsaturated carboxylic acid or |
| 6127412 |
Halogen substituted carbamate compounds from 2-phenyl-1,2-ethanediol |
October 3, 2000 |
| The optically pure forms of monocarbamates of halogenated 2-phenyl-1,2-ethanediol and dicarbamates of 2-phenyl-1,2-ethanediol have been found to be effective in the treatment of disorders of the central nervous system, especially as anti-convulsive or anti-epileptic agents. |
| 6103759 |
Halogen substituted carbamate compounds from 2-phenyl-1, 2-ethanediol |
August 15, 2000 |
| The optically pure forms of monocarbamates of halogenated 2-phenyl-1,2-ethanediol and dicarbamates of 2-phenyl-1,2-ethanediol have been found to be effective in the treatment of disorders of the central nervous system, especially as anti-convulsive or anti-epileptic agents. |
| 6079358 |
Apparatus for forming thin film |
June 27, 2000 |
| An apparatus for forming a thin film comprises a housing defining a reaction chamber; a pair of electrodes securely fixed in the reaction chamber of the housing such that they are spaced from each other by a predetermined distance; and a plasma carrier detachably disposed between the |
