Patents by Inventor Yuzuru Kokido
Yuzuru Kokido 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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Publication number: 20240157334Abstract: Provided are a packing material used for size exclusion chromatography, which has high alkali resistance and suppressed non-specific adsorption, and a method for producing the same. A packing material, wherein one end of a block copolymer represented by the following formula 1 is bonded to a porous organic polymer carrier containing 60 to 95 mol % of a repeating unit derived from glycidyl methacrylate and 5 to 40 mol % of a repeating unit derived from a polyfunctional monomer via an ether bond derived from a terminal hydroxyl group, HO—(C2H4O)l—(C3H6O)m—(C2H4O)n—H??(formula 1) wherein l is an integer of 5 to 140, m is an integer of 15 to 75, and n is an integer of 5 to 140, and a proportion of m to a sum of l, m, and n is 5 to 85%.Type: ApplicationFiled: June 3, 2022Publication date: May 16, 2024Applicant: Resonac CorporationInventors: Naoki UCHIYAMA, Yuzuru KOKIDO
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Patent number: 11857949Abstract: A packing material, wherein to a porous organic polymer carrier including 60 to 95 mol % of a repeating unit derived from glycidyl methacrylate and 5 to 40 mol % of a repeating unit derived from a polyfunctional monomer, one end of at least one alkylene group selected from a linear alkylene group, a cycloalkylene group, and a linear alkylcycloalkylene group, having 4 to 9 carbon atoms is bonded by a glycidyl group derived from glycidyl methacrylate, and an other end of the alkylene group is bonded to any one end of a polyol via an ether bond.Type: GrantFiled: June 3, 2022Date of Patent: January 2, 2024Assignee: Resonac CorporationInventors: Naoki Uchiyama, Yuzuru Kokido
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Publication number: 20230390738Abstract: A packing material, wherein to a porous organic polymer carrier including 60 to 95 mol % of a repeating unit derived from glycidyl methacrylate and 5 to 40 mol % of a repeating unit derived from a polyfunctional monomer, one end of at least one alkylene group selected from a linear alkylene group, a cycloalkylene group, and a linear alkylcycloalkylene group, having 4 to 9 carbon atoms is bonded by a glycidyl group derived from glycidyl methacrylate, and an other end of the alkylene group is bonded to any one end of a polyol via an ether bond.Type: ApplicationFiled: June 3, 2022Publication date: December 7, 2023Applicant: Resonac CorporationInventors: Naoki UCHIYAMA, Yuzuru KOKIDO
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Patent number: 11123656Abstract: The present invention relates to a method of separating and analyzing a mixture of oligonucleotides, including performing liquid chromatography using a column packed with a packing material obtained by fixing a diol to a surface of each of porous particles formed of a crosslinked organic polymer. According to this method, the oligonucleotides can be separated and analyzed with higher sensitivity compared to cases where columns having silica gel as a base material are used. In addition, the column can be washed with an alkaline solution.Type: GrantFiled: June 21, 2018Date of Patent: September 21, 2021Assignee: SHOWA DENKO K.K.Inventors: Junji Sasuga, Hirobumi Aoki, Yuzuru Kokido
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Publication number: 20200054966Abstract: The present invention relates to a method of separating and analyzing a mixture of oligonucleotides, including performing liquid chromatography using a column packed with a packing material obtained by fixing a diol to a surface of each of porous particles formed of a crosslinked organic polymer. According to this method, the oligonucleotides can be separated and analyzed with higher sensitivity compared to cases where columns having silica gel as a base material are used. In addition, the column can be washed with an alkaline solution.Type: ApplicationFiled: June 21, 2018Publication date: February 20, 2020Applicant: SHOWA DENKO K.K.Inventors: Junji SASUGA, Hirobumi AOKI, Yuzuru KOKIDO
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Publication number: 20180298052Abstract: An object of the present invention is to obtain a protein monomer useful as a raw material for medicines industrially and economically in high yield and high purity. In the method for purifying a protein of the present invention, a protein solution containing a protein monomer and a protein aggregate is passed through a column holding a porous rigid polymeric self-supporting structure to which a hydrophobic group is immobilized, and then recovering the protein monomer in a flow-through mode.Type: ApplicationFiled: April 28, 2016Publication date: October 18, 2018Applicant: SHOWA DENKO K.K.Inventors: Natsuno MATSUI, Yuzuru KOKIDO, Hirobumi AOKI, Tadashi YONEDA
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Publication number: 20180079778Abstract: Provided is a method of removing a protein aggregate which can obtain a useful protein monomer in a high yield and a high purity as a raw material of a pharmaceutical product or the like. The method of removing a protein aggregate includes: a step of making the monomer of a protein and the aggregate of proteins adsorb to the column by making a solution containing a monomer of a protein and an aggregate of proteins pass through a column containing a hard porous polymer self-supporting structure to which a strong cation exchange group is fixed; and a step of making a mobile phase consisting of a mixed solution of a buffer solution and an ionic buffer solution pass through the column to which the monomer of a protein and the aggregate of proteins are adsorbed, to selectively elute the monomer of a protein.Type: ApplicationFiled: April 28, 2016Publication date: March 22, 2018Applicant: SHOWA DENKO K.K.Inventors: Yuzuru KOKIDO, Natsuno MATSUI, Hirobumi AOKI, Tadashi YONEDA
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Patent number: 9677096Abstract: A method of manufacturing 1,4-butanediol through acetyl-CoA, acetoacetyl-CoA, 3-hydroxybutyryl-CoA, crotonyl-CoA, and 4-hydroxybutyryl-CoA by using a microbe and/or a culture thereof, wherein the microbe in the manufacturing method for 1,4-butanediol includes any one of genes among (a) a gene that has a base sequence of sequence number 1, (b) a gene that has a base sequence such that one or more bases are deleted, substituted, or added in a base sequence of sequence number 1, wherein the gene has a base sequence with an identity greater than or equal to 90% with respect to the base sequence of sequence number 1, and (c) a gene that hybridizes with a gene that has a base sequence complementary with a gene that has a base sequence described in sequence number 1 on a stringent condition, and includes any one or more genes among (d) genes that have base sequences of sequence numbers 2 to 9, (e) genes that have base sequences such that one or more bases are deleted, substituted, or added in base sequences of sequeType: GrantFiled: November 28, 2013Date of Patent: June 13, 2017Assignee: SHOWA DENKO K.K.Inventors: Hirobumi Aoki, Yuzuru Kokido, Yoko Hashimoto, Tadashi Yoneda
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Publication number: 20150376657Abstract: A method of manufacturing 1,4-butanediol through acetyl-CoA, acetoacetyl-CoA, 3-hydroxybutyryl-CoA, crotonyl-CoA, and 4-hydroxybutyryl-CoA by using a microbe and/or a culture thereof, wherein the microbe in the manufacturing method for 1,4-butanediol includes any one of genes among (a) a gene that has a base sequence of sequence number 1, (b) a gene that has a base sequence such that one or more bases are deleted, substituted, or added in a base sequence of sequence number 1, wherein the gene has a base sequence with an identity greater than or equal to 90% with respect to the base sequence of sequence number 1, and (c) a gene that hybridizes with a gene that has a base sequence complementary with a gene that has a base sequence described in sequence number 1 on a stringent condition, and includes any one or more genes among (d) genes that have base sequences of sequence numbers 2 to 9, (e) genes that have base sequences such that one or more bases are deleted, substituted, or added in base sequences of sequeType: ApplicationFiled: November 28, 2013Publication date: December 31, 2015Applicant: SHOWA DENKO K. K.Inventors: Hirobumi AOKI, Yuzuru KOKIDO, Yoko HASHIMOTO, Tadashi YONEDA
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Publication number: 20150353962Abstract: A method of manufacturing 1,4-butanediol, using a microbe and/or a culture thereof, by an enzyme reaction system that uses acyl-CoA reductase, via 3-hydroxybutyryl-CoA, crotonyl-CoA and 4-hydroxybutyryl CoA in this order, wherein the reactivity of the acyl-CoA reductase to 4-hydroxybutyryl CoA is greater than or equal to 0.05 times of the reactivity of the acyl-CoA reductase to 3-hydroxybutyryl-CoA.Type: ApplicationFiled: September 20, 2013Publication date: December 10, 2015Inventors: Hirobumi AOKI, Yuzuru KOKIDO, Yoko HASHIMOTO, Tadashi YONEDA
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Publication number: 20150307905Abstract: A method of manufacturing a butanediol through 3-hydroxybutyryl-CoA that uses a microbe and/or a culture thereof and utilizes an enzyme reaction that is caused by an acyl-CoA reductase, wherein the microbe in the manufacturing method for a butanediol is characterized in that an activity of an acyl-CoA hydratase (EC number: 3. 1. 2. ?) is deleted or reduced.Type: ApplicationFiled: December 4, 2013Publication date: October 29, 2015Inventors: Hirobumi AOKI, Yuzuru KOKIDO, Yoko HASHIMOTO, Tadashi YONEDA
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Publication number: 20150291985Abstract: A method of manufacturing 1,4-butanediol by an enzyme reaction system via 3-hydroxybutyryl-CoA, crotonyl-CoA and 4-hydroxybutyryl CoA, in this order, using a microbe and/or a culture thereof, wherein the 3-hydroxybutyryl-CoA is an optically active substance, and wherein the microbe includes (1) a gene that codes enoyl-CoA hydratase, (2) a gene that codes vinylacetyl-CoA delta-isomerase, (3) a gene that codes 4-hydroxybutyryl CoA dehydratase, and (4) a gene that codes acyl-CoA reductase whose substrate specificity has an optical selectivity opposite to that of the 3-hydroxybutyryl-CoA.Type: ApplicationFiled: September 20, 2013Publication date: October 15, 2015Inventors: Hirobumi Aoki, Yuzuru Kokido, Yoko Hashimoto, Tadashi Yoneda
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Publication number: 20150275236Abstract: A method of manufacturing 1,4-butanediol, using a microbe and/or a culture thereof, by an enzyme reaction system that uses acetoacetyl-CoA reductase and enoyl-CoA hydratase, via acetoacetyl-CoA, 3-hydroxybutyryl-CoA and crotonyl-CoA in this order, wherein each of the acetoacetyl-CoA reductase and the enoyl-CoA hydratase is specific to a stereoisomer of 3-hydroxybutyryl-CoA.Type: ApplicationFiled: September 13, 2013Publication date: October 1, 2015Inventors: Hirobumi Aoki, Yuzuru Kokido, Yoko Hashimoto, Tadashi Yoneda
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Publication number: 20150252390Abstract: A method of manufacturing a butanediol includes a step of culturing a microbe that contains a gene that codes acetoacetyl-CoA synthase that catalyzes a reaction that irreversibly produces acetoacetyl-CoA from acetyl-CoA and malonyl-CoA, acetoacetyl-CoA reductase that catalyzes a reaction that produces 3-hydroxybutyryl-CoA from acetoacetyl-CoA, and an enzyme that catalyzes a reaction for producing a butanediol from 3-hydroxybutyryl-CoA.Type: ApplicationFiled: August 20, 2013Publication date: September 10, 2015Applicant: SHOWA DENKOInventors: Hirobumi Aoki, Yuzuru Kokido, Tadashi Yoneda
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Publication number: 20150232830Abstract: A gene is selected from the group consisting of a gene (a) that has a base sequence of sequence number 1, a gene (b) that has a base sequence such that one or more bases are deleted, substituted, or added in a base sequence of sequence number 1, wherein the gene (b) has a base sequence with an identity greater than or equal to 90% with respect to the base sequence of sequence number 1, and a gene (c) that hybridizes with a gene that has a base sequence complimentary with a gene that has a base sequence of sequence number 1 on a stringent condition, wherein the selected gene in combination with a gene that codes enoyl-CoA hydratase is able to provide a microbe or a culture of the microbe with an ability to convert 3-hydroxybutyryl-CoA into 4-hydroxybutyryl-CoA or 4-hydroxybutyryl-CoA into 3-hydroxybutyryl-CoA.Type: ApplicationFiled: September 19, 2013Publication date: August 20, 2015Inventors: Hirobumi Aoki, Yuzuru Kokido, Tadashi Yoneda