Patents by Inventor Jin S. Yoo
Jin S. Yoo has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7615145Abstract: The present invention relates to a process of reducing sulfur- or nitrogen-containing compounds and producing oxygenates, and in particular to a one-pot process of reducing sulfur- or nitrogen-containing compounds and also producing oxygenates in the presence of a homogeneous catalyst such as Mn+/a first solvent or M1n+/a second solvent/M2m+/a third solvent or a mixture thereof, the process herein being useful as an excellent octane booster in the reformulated gasoline and as a cetane booster for the future oxygenated diesel in a one-pot reaction.Type: GrantFiled: October 11, 2007Date of Patent: November 10, 2009Assignee: Kocat Inc.Inventors: Jin S. Yoo, Sang-Chul Lee, Ho Dong Kim
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Patent number: 7591943Abstract: The present invention relates to a process of reducing sulfur- or nitrogen-containing compounds and also producing oxygenates, which can be used as an excellent octane booster in the reformulated gasoline and as a cetane booster for the future oxygenated diesel in a one-pot reaction.Type: GrantFiled: September 20, 2007Date of Patent: September 22, 2009Assignee: Kocat Inc.Inventors: Jin S. Yoo, Sang-Chul Lee, Ho Dong Kim
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Publication number: 20080149533Abstract: The present invention relates to a process of reducing sulfur- or nitrogen-containing compounds and producing oxygenates, and in particular to a one-pot process of reducing sulfur- or nitrogen-containing compounds and also producing oxygenates in the presence of a homogeneous catalyst such as Mn+/a first solvent or M1n+/a second solvent/M2m+/a third solvent or a mixture thereof, the process herein being useful as an excellent octane booster in the reformulated gasoline and as a cetane booster for the future oxygenated diesel in a one-pot reaction.Type: ApplicationFiled: October 11, 2007Publication date: June 26, 2008Applicant: KOCAT INC.Inventors: Jin S. YOO, Sang-Chul LEE, Ho Dong KIM
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Publication number: 20080121565Abstract: The present invention relates to a process of reducing sulfur- or nitrogen-containing compounds and also producing oxygenates, which can be used as an excellent octane booster in the reformulated gasoline and as a cetane booster for the future oxygenated diesel in a one-pot reaction.Type: ApplicationFiled: September 20, 2007Publication date: May 29, 2008Applicant: KOCAT INC.Inventors: Jin S. YOO, Sang-Chul LEE, Ho Dong KIM
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Publication number: 20080091043Abstract: The present invention relates to a process for producing an organic acid or its derivatives, which comprises oxidation of a hydrocarbon substrate in the presence of a homogeneous MC-type catalyst and an oxidant. In particular, the present invention relates to a process comprising oxidation of a hydrocarbon substrate in the presence of a homogeneous MC-type catalyst selected from Co/Br, Mn/Br, Co/Mn/Br and Co/Mn/M/Br and an O2/CO2 mixed gas oxidant where the partial pressure of O2 is controlled to 30-40%, thereby improving the oxidation rate, the conversion, the selectivity and the yield even under milder conditions. Especially, the present invention remarkably reduces down to a negligible level the production of color impurities and other impurities such as 4-CBA and p-toluic acid, which had been conventionally removed by hydrogenation reduction. Further, the loss in acetic acid solvent due to combustion can also be drastically decreased using the method of the present invention.Type: ApplicationFiled: August 24, 2007Publication date: April 17, 2008Applicant: KOCAT INC.Inventors: Jin S. Yoo, Sang-Chul Lee, Ho Dong Kim
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Publication number: 20020193631Abstract: The present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by liquid-phase oxidation. More particularly, the present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by oxidation in acetic acid as solvent with oxygen-containing gas in the presence of cobalt/manganese/bromine complex catalyst, wherein nickel and carbon dioxide in an appropriate amount are added to increase an activity of cobalt/manganese/bromine complex catalyst. Especially nickel has a synergistic effect with carbon dioxide and maximize the formation of the desired product having the corresponding carboxylic groups to the number of alkyl groups in a reactant.Type: ApplicationFiled: September 28, 2001Publication date: December 19, 2002Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGYInventors: Sang-Eon Park, Jin S. Yoo, Ki-Won Jun, David B. Raju, Young-Ho Kim
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Patent number: 6476257Abstract: The present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by liquid-phase oxidation. More particularly, the present invention relates to a method for preparing aromatic carboxylic acid from alkylaromatics by oxidation in acetic acid as solvent with oxygen-containing gas in the presence of cobalt/manganese/bromine complex catalyst, wherein nickel and carbon dioxide in an appropriate amount are added to increase an activity of cobalt/manganese/bromine complex catalyst. Especially nickel has a synergistic effect with carbon dioxide and maximize the to formation of the desired product having the corresponding carboxylic groups to the number of alkyl groups in a reactant.Type: GrantFiled: September 28, 2001Date of Patent: November 5, 2002Assignee: Korea Institute of Chemical TechnologyInventors: Sang-Eon Park, Jin S. Yoo, Ki-Won Jun, David B. Raju, Young-Ho Kim
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Patent number: 6048451Abstract: A product of reduced sulfur content is produced from a feedstock which is comprised of a mixture of hydrocarbons and contains organic sulfur compounds as unwanted impurities. The process comprises converting at least a portion of the sulfur-containing impurities to sulfur-containing products of higher boiling point by treatment with an alkylating agent in the presence of an acid catalyst and removing at least a portion of these higher boiling products by fractional distillation. Suitable alkylating agents include alcohols and olefins. In a preferred embodiment, catalytic cracking products which contain aromatic sulfur compounds as impurities are used as a feedstock for the process.Type: GrantFiled: January 14, 1997Date of Patent: April 11, 2000Assignee: BP Amoco CorporationInventors: George A. Huff, Jr., Bruce D. Alexander, Douglas N. Rundell, William J. Reagan, Ozie S. Owen, Jin S. Yoo
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Patent number: 5863419Abstract: A product of reduced sulfur content is produced from a feedstock which is comprised of a mixture of hydrocarbons and contains organic sulfur compounds as unwanted impurities. The process comprises converting at least a portion of the sulfur-containing impurities to sulfur-containing products of higher boiling point by treatment with an alkylating agent in the presence of an acid catalyst and removing at least a portion of these higher boiling products by fractional distillation. The process can be carried out in a distillation column reactor wherein the acid catalyzed reaction and fractional distillation are carried out simultaneously. Suitable alkylating agents include alcohols and olefins.Type: GrantFiled: August 18, 1997Date of Patent: January 26, 1999Assignee: Amoco CorporationInventors: George A. Huff, Jr., Ozie S. Owen, Bruce D. Alexander, Douglas N. Rundell, William J. Reagan, Jin S. Yoo
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Patent number: 5324702Abstract: Compositions comprising certain metal-containing materials distributed interactively on a deboronated HAMS-1B crystalline borosilicate molecular sieve which are useful for catalytically oxidizing or oxidatively dehydrogenating organic compounds such as alkanes, aromatics, and alkyl-substituted aromatics are described. Alkanes are oxidatively dehydrogenated to olefins, and an aromatic compound such as benzene can be oxidized by nitric and/or nitrous oxide to largely phenol or largely nitrobenzene depending upon the oxidation temperature. When the compound is a methylaromatic, oxidation produces an aromatic aldehyde. Alkyl groups larger than methyl oxidatively dehydrogenate to alkenyl groups.Type: GrantFiled: December 16, 1992Date of Patent: June 28, 1994Assignee: Amoco CorporationInventors: Jin S. Yoo, Mark S. Kleefisch, John A. Donohue
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Patent number: 4963520Abstract: A composition of matter comprising at least one metal-containing spinel which includes a first metal and a second metal having a valence higher than the valence of the first metal, a minor amount of at least one-third metal component effective to promote the oxidation of sulfur dioxide to sulfur trioxide at sulfur dioxide oxidation conditions, and a minor amount of at least one-fourth metal component effective to promote the reduction of first metal sulfate at first metal sulfate reduction conditions. These compositions are useful, e.g., in hydrocarbon conversion processes, to reduce sulfur oxide and/or nitrogen oxide atmospheric emissions.Type: GrantFiled: August 1, 1988Date of Patent: October 16, 1990Assignee: UOPInventors: Jin S. Yoo, Cecelia A. Radlowski, John A. Karch, Alakananda Bhattacharyya
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Patent number: 4957718Abstract: A process for the removal of sulfur oxides from a gas which comprises (a) contacting the sulfur oxide-containing gas with at least one of certain metal, oxygen-containing components, e.g., modified perovskite-type components, at conditions effective to associate at least a portion of the sulfur oxides with the component to reduce the amount of sulfur oxides in the gas; and (b) contacting the component containing associated sulfur oxides at conditions effective to reduce the amount of sulfur associated with the component.Type: GrantFiled: November 24, 1987Date of Patent: September 18, 1990Assignee: UOPInventors: Jin S. Yoo, John A. Karch, Alakananda A. Bhattacharyya, Cecelia A. Radlowski
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Patent number: 4957892Abstract: An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbon conversion at hydrocarbon conversion conditions, and, as a minor component, discrete entities comprising at least one spinel, preferably alkaline earth metal-containing spinel; thereby reducing the amount of sulfur oxides exiting the catalyst regeneration zone.Improved hydrocarbon conversion catalysts are also disclosed.Type: GrantFiled: April 7, 1988Date of Patent: September 18, 1990Assignee: UOPInventors: Jin S. Yoo, John A. Jaecker
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Patent number: 4883783Abstract: An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbon conversion at hydrocarbon conversion conditions, and, as a minor component, discrete entities comprising at least one spinel, preferably alkaline earth metal-containing spinel, and a minor amount of at least one added component selected from the group consisting of alkali metal components, calcium components, barium components, strontium components, beryllium components and mixtures thereof.Type: GrantFiled: December 31, 1987Date of Patent: November 28, 1989Assignee: UOPInventors: Emmett H. Burk, Jr., Jin S. Yoo, Cecelia A. Radlowski
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Patent number: 4824814Abstract: A process for treating a catalyst useful to promote the conversion of a substantially hydrocarbon feedstock containing at least one first metal at least a portion of which is deposited on the catalyst forming a first metal-containing catalyst, which process comprises:contacting the catalyst with at least one component of at least one second metal selected from the group consisting of antimony, tin, gallium, indium, zinc, tellurium and mixtures thereof to increase the second metal content of the catalyst, anddemetallizing the first metal-containing catalyst to provide a demetallized catalyst having a reduced first metal content.Type: GrantFiled: September 21, 1987Date of Patent: April 25, 1989Assignee: Chemcat CorporationInventors: Frank J. Elvin, Jin S. Yoo
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Patent number: 4800185Abstract: A process for treating a catalyst contaminated with at least one metal which was so contaminated while promoting conversion of a substantially hydrocarbon feedstock containing the metal comprising at least one of the following: (1) contacting the catalyst component to increase the ammonium ion-containing component to increase the ammonium ion content of the catalyst; and (2) contacting the catalyst with at least one rare earth metal ion-containing component to increase the rare earth metal ion content of the catalyst. Improved hydrocarbon conversion processes are also disclosed.Type: GrantFiled: August 28, 1987Date of Patent: January 24, 1989Assignee: ChemCat CorporationInventors: Frank J. Elvin, Jan-Erik Otterstedt, Jin S. Yoo
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Patent number: 4790982Abstract: A composition of matter comprising at least one metal-containing spinel which includes a first metal and a second metal having a valence higher than the valence of the first metal, a minor amount of at least one third metal component effective to promote the oxidation of sulfur dioxide to sulfur trioxide at sulfur dioxide oxidation conditions, and a minor amount of at least one fourth metal component effective to promote the reduction of first metal sulfate at first metal sulfate reduction conditions. These compositions are useful, e.g., in hydrocarbon conversion processes, to reduce sulfur oxide and/or nitrogen oxide atmospheric emissions.Type: GrantFiled: April 7, 1986Date of Patent: December 13, 1988Assignee: Katalistiks International, Inc.Inventors: Jin S. Yoo, Cecelia A. Radlowski, John A. Karch, Alakananda Bhattacharyya
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Patent number: 4758418Abstract: An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbon conversion at hydrocarbon conversion conditions, and, as a minor component, discrete entities comprising at least one spinel, preferably alkaline earth metal-containing spinel; thereby reducing the amount of sulfur oxides exiting the catalyst regeneration zone.Improved hydrocarbon conversion catalysts are also disclosed.Type: GrantFiled: December 11, 1986Date of Patent: July 19, 1988Assignee: Union Carbide CorporationInventors: Jin S. Yoo, John A. Jaecker
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Patent number: 4735705Abstract: An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbon conversion at hydrocarbon conversion conditions, and, as a minor component, discrete entities comprising at least one spinel, preferably alkaline earth metal-containing spinel, and a minor amount of at least one added component selected from the group consisting of alkali metal components, calcium components, barium components, strontium components, beryllium components and mixtures thereof.Type: GrantFiled: May 11, 1987Date of Patent: April 5, 1988Assignee: Katalistiks International Inc.Inventors: Emmett H. Burk, Jr., Jin S. Yoo, Cecelia A. Radlowski
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Patent number: 4642178Abstract: An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbon conversion at hydrocarbon conversion conditions, and, as a minor component, discrete entities comprising at least one spinel, including a first metal and at least two different second metals having valences higher than the valence of the first metal, one of the second metals being aluminum and the other of the second metals being trivalent and selected from the group consisting of iron, chromium, vanadium, manganese, gallium, boron, cobalt and mixtures thereof; thereby reducing the amount of sulfur oxides exiting the catalyst regeneration zone.Improved hydrocarbon conversion catalysts are also disclosed.Type: GrantFiled: January 16, 1985Date of Patent: February 10, 1987Assignee: Katalistiks, Inc.Inventors: Jin S. Yoo, John A. Jaecker