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).

  • Publication number: 20240157334
    Abstract: 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: Application
    Filed: June 3, 2022
    Publication date: May 16, 2024
    Applicant: Resonac Corporation
    Inventors: Naoki UCHIYAMA, Yuzuru KOKIDO
  • Patent number: 11857949
    Abstract: 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: Grant
    Filed: June 3, 2022
    Date of Patent: January 2, 2024
    Assignee: Resonac Corporation
    Inventors: Naoki Uchiyama, Yuzuru Kokido
  • Publication number: 20230390738
    Abstract: 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: Application
    Filed: June 3, 2022
    Publication date: December 7, 2023
    Applicant: Resonac Corporation
    Inventors: Naoki UCHIYAMA, Yuzuru KOKIDO
  • Patent number: 11123656
    Abstract: 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: Grant
    Filed: June 21, 2018
    Date of Patent: September 21, 2021
    Assignee: SHOWA DENKO K.K.
    Inventors: Junji Sasuga, Hirobumi Aoki, Yuzuru Kokido
  • Publication number: 20200054966
    Abstract: 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: Application
    Filed: June 21, 2018
    Publication date: February 20, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Junji SASUGA, Hirobumi AOKI, Yuzuru KOKIDO
  • Publication number: 20180298052
    Abstract: 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: Application
    Filed: April 28, 2016
    Publication date: October 18, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Natsuno MATSUI, Yuzuru KOKIDO, Hirobumi AOKI, Tadashi YONEDA
  • Publication number: 20180079778
    Abstract: 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: Application
    Filed: April 28, 2016
    Publication date: March 22, 2018
    Applicant: SHOWA DENKO K.K.
    Inventors: Yuzuru KOKIDO, Natsuno MATSUI, Hirobumi AOKI, Tadashi YONEDA
  • Patent number: 9677096
    Abstract: 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 seque
    Type: Grant
    Filed: November 28, 2013
    Date of Patent: June 13, 2017
    Assignee: SHOWA DENKO K.K.
    Inventors: Hirobumi Aoki, Yuzuru Kokido, Yoko Hashimoto, Tadashi Yoneda
  • Publication number: 20150376657
    Abstract: 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 seque
    Type: Application
    Filed: November 28, 2013
    Publication date: December 31, 2015
    Applicant: SHOWA DENKO K. K.
    Inventors: Hirobumi AOKI, Yuzuru KOKIDO, Yoko HASHIMOTO, Tadashi YONEDA
  • Publication number: 20150353962
    Abstract: 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: Application
    Filed: September 20, 2013
    Publication date: December 10, 2015
    Inventors: Hirobumi AOKI, Yuzuru KOKIDO, Yoko HASHIMOTO, Tadashi YONEDA
  • Publication number: 20150307905
    Abstract: 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: Application
    Filed: December 4, 2013
    Publication date: October 29, 2015
    Inventors: Hirobumi AOKI, Yuzuru KOKIDO, Yoko HASHIMOTO, Tadashi YONEDA
  • Publication number: 20150291985
    Abstract: 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: Application
    Filed: September 20, 2013
    Publication date: October 15, 2015
    Inventors: Hirobumi Aoki, Yuzuru Kokido, Yoko Hashimoto, Tadashi Yoneda
  • Publication number: 20150275236
    Abstract: 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: Application
    Filed: September 13, 2013
    Publication date: October 1, 2015
    Inventors: Hirobumi Aoki, Yuzuru Kokido, Yoko Hashimoto, Tadashi Yoneda
  • Publication number: 20150252390
    Abstract: 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: Application
    Filed: August 20, 2013
    Publication date: September 10, 2015
    Applicant: SHOWA DENKO
    Inventors: Hirobumi Aoki, Yuzuru Kokido, Tadashi Yoneda
  • Publication number: 20150232830
    Abstract: 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: Application
    Filed: September 19, 2013
    Publication date: August 20, 2015
    Inventors: Hirobumi Aoki, Yuzuru Kokido, Tadashi Yoneda