Patents by Inventor Tetsuya Ikemoto

Tetsuya Ikemoto 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: 20240287465
    Abstract: An object of the present invention is to provide a method for producing insulin-producing cells having sufficient glucose responsiveness from mesenchymal stem cells, an insulin-producing cell having sufficient glucose responsiveness, a cell structure containing the insulin-producing cell, and a pharmaceutical composition.
    Type: Application
    Filed: May 13, 2024
    Publication date: August 29, 2024
    Applicants: FUJIFILM Corporation, Tokushima University
    Inventors: Kentaro NAKAMURA, Mitsuo SHIMADA, Tetsuya IKEMOTO
  • Patent number: 12018282
    Abstract: An object of the present invention is to provide a method for producing insulin-producing cells having sufficient glucose responsiveness from mesenchymal stem cells, an insulin-producing cell having sufficient glucose responsiveness, a cell structure containing the insulin-producing cell, and a pharmaceutical composition.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: June 25, 2024
    Assignees: FUJIFILM Corporation, TOKUSHIMA UNIVERSITY
    Inventors: Kentaro Nakamura, Mitsuo Shimada, Tetsuya Ikemoto
  • Patent number: 11569044
    Abstract: A solar battery unit (100) is provided that includes: a substrate (120); a solar battery (110) attached to a back face of the substrate (120); and a communications module (130) attached to the substrate (120). The communications module (130) includes an antenna (132) disposed so as not to overlap solar cells (115) in the solar battery (110) in a front view.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: January 31, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masayuki Nakano, Satoshi Shimizu, Masato Sasaki, Yuki Watanabe, Tomohisa Yoshie, Tetsuya Ikemoto, Daisuke Toyoshima
  • Publication number: 20210304971
    Abstract: A solar battery unit (100) is provided that includes: a substrate (120); a sola battery (110) attached to a back face of the substrate (120); and a communications module (130) attached to the substrate (120). The communications module (130) includes an antenna (132) disposed so as not to overlap solar cells (115) in the solar battery (110) in a front view.
    Type: Application
    Filed: July 1, 2019
    Publication date: September 30, 2021
    Inventors: MASAYUKI NAKANO, SATOSHI SHIMIZU, MASATO SASAKI, YUKI WATANABE, TOMOHISA YOSHIE, TETSUYA IKEMOTO, DAISUKE TOYOSHIMA
  • Publication number: 20200392464
    Abstract: An object of the present invention is to provide a method for producing insulin-producing cells having sufficient glucose responsiveness from mesenchymal stem cells, an insulin-producing cell having sufficient glucose responsiveness, a cell structure containing the insulin-producing cell, and a pharmaceutical composition.
    Type: Application
    Filed: May 8, 2020
    Publication date: December 17, 2020
    Applicants: FUJIFILM Corporation, Tokushima University
    Inventors: Kentaro NAKAMURA, Mitsuo SHIMADA, Tetsuya IKEMOTO
  • Patent number: 10040760
    Abstract: Compound (1) is useful as a catalyst since compound (III) can be obtained by reacting compound (I) with compound (II) in the presence of compound (I). In particular, an optically active substance of compound (III) can be produced by using compound (I) which is optically active.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: August 7, 2018
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tetsuya Ikemoto, Leopold Mpaka Lutete
  • Publication number: 20180127364
    Abstract: Compound (1) is useful as a catalyst since compound (III) can be obtained by reacting compound (I) with compound (II) in the presence of compound (I). In particular, an optically active substance of compound (III) can be produced by using compound (I) which is optically active.
    Type: Application
    Filed: April 8, 2016
    Publication date: May 10, 2018
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tetsuya IKEMOTO, Leopold Mpaka LUTETE
  • Patent number: 9259723
    Abstract: A quaternary ammonium salt represented by formula (5) (wherein R1 represents an alkyl group having 1 to 4 carbon atoms, R2 represents an alkyl group having 1 to 10 carbon atoms, R3 represents an alkyl group having 1 to 10 carbon atoms that is optionally substituted with one or more phenyl groups; or a phenyl group that optionally has one or more groups selected from the group consisting of alkyl groups having 1 to 10 carbon atoms and a trifluoromethyl group, R4 represents an alkyl group having 1 to 4 carbon atoms, R5 represents an alkyl group having 1 to 10 carbon atoms, C* represents an asymmetric carbon atom, and X? represents a halide ion) can be used as a catalyst having good stability under basic conditions.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: February 16, 2016
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshiaki Aikawa, Tetsuya Ikemoto
  • Patent number: 8742162
    Abstract: 1-Amino-2-vinylcyclopropanecarboxylic acid ester, which is useful as a synthetic intermediate of pharmaceuticals, can be produced by a process of producing 1-amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (4): including a step of hydrolysis of an optically active 1-N-(arylmethylene)amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (3): which is obtained by reacting an N-(arylmethylene)glycine ester represented by formula (1): with a compound represented by formula (2): in the presence of a base and an optically active quaternary ammonium salt.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: June 3, 2014
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Toshiaki Aikawa, Junichi Yasuoka, Tetsuya Ikemoto
  • Publication number: 20140094616
    Abstract: Compound (1) or a salt that is useful as an intermediate for the production of a medicine, an agrochemical or the like can be produced by a process including the following steps: (A) reacting an aldehyde (2) with nitromethane to produce a nitroaldehyde; (B) reacting the nitroaldehyde with an alcohol to produce a nitroacetal; (C) reducing the nitroacetal to produce an aminoacetal; (D) protecting an amino group in the aminoacetal to produce a protected aminoacetal; (E) treating the protected aminoacetal with an acid and subsequently with a base and then reacting the resultant product with a cyanating agent to produce a nitrile; (F) hydrolyzing the nitrile to produce a protected amino acid; and (G) substituting a group R5 in the protected amino acid by a hydrogen atom and protecting a carboxyl group therein.
    Type: Application
    Filed: May 17, 2012
    Publication date: April 3, 2014
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tetsuya Ikemoto, Leopold Mpaka Lutete, Toshiaki Aikawa
  • Publication number: 20130296552
    Abstract: A quaternary ammonium salt represented by formula (5) (wherein R1 represents an alkyl group having 1 to 4 carbon atoms, R2 represents an alkyl group having 1 to 10 carbon atoms, R3 represents an alkyl group having 1 to 10 carbon atoms that is optionally substituted with one or more phenyl groups; or a phenyl group that optionally has one or more groups selected from the group consisting of alkyl groups having 1 to 10 carbon atoms and a trifluoromethyl group, R4 represents an alkyl group having 1 to 4 carbon atoms, R5 represents an alkyl group having 1 to 10 carbon atoms, C* represents an asymmetric carbon atom, and X? represents a halide ion) can be used as a catalyst having good stability under basic conditions.
    Type: Application
    Filed: January 30, 2012
    Publication date: November 7, 2013
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshiaki Aikawa, Tetsuya Ikemoto
  • Patent number: 8293926
    Abstract: The present invention provides a method of producing a compound (IIa) or a compound (IIb), provides a method of producing a compound (IIIa) or a compound (IIIb), provides a method of producing a compound (Va) or its salt or a compound (Vb) or its salt, provides a method of producing a compound (IIIa) or a compound (IIIb), further, provides a method of producing a compound (Va) or its salt or a compound (Vb) or its salt including these production methods.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: October 23, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Junichi Yasuoka, Shoji Fukuyo, Tetsuya Ikemoto
  • Patent number: 8288564
    Abstract: The invention provides a process for production of trans-dibenzoxenopyrrole compounds, in which reduction, leaving group conversion, hydrogenation and methylation are carried out in that order. The process of the invention allows trans-dibenzoxenopyrrole compounds to be produced by a simpler procedure than conventional processes. The invention further provides novel compounds obtained as intermediates in the process, and a process for their production.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: October 16, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Weiqi Wang, Tetsuya Ikemoto
  • Publication number: 20120130116
    Abstract: 1-Amino-2-vinylcyclopropanecarboxylic acid ester, which is useful as a synthetic intermediate of pharmaceuticals, can be produced by a process of producing 1-amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (4): including a step of hydrolysis of an optically active 1-N-(arylmethylene)amino-2-vinylcyclopropanecarboxylic acid ester represented by formula (3): which is obtained by reacting an N-(arylmethylene)glycine ester represented by formula (1): with a compound represented by formula (2): in the presence of a base and an optically active quaternary ammonium salt.
    Type: Application
    Filed: August 5, 2010
    Publication date: May 24, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshiaki Aikawa, Junichi Yasuoka, Tetsuya Ikemoto
  • Publication number: 20110172431
    Abstract: A process is provided for producing a 1-substituted trans-4-(substituted amino)piperidin-3-ol represented by formula (III-1): The process includes a step of reacting a 1-substituted-3,4-epoxypiperidine represented by formula (I): with an amine compound represented by formula (II) in the presence of an inorganic lithium salt. By utilizing the process, trans-4-aminopiperidin-3-ol compounds useful as various chemical products, such as medicine intermediates, can be produced.
    Type: Application
    Filed: September 25, 2009
    Publication date: July 14, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Toshiaki Aikawa, Osamu Tokuda, Tetsuya Ikemoto
  • Publication number: 20110166357
    Abstract: An N-substituted-trans-4-azidopiperidin-3-ol represented by formula (II-1) R1 is as defined below, which is useful as a pharmaceutical intermediate and so on, is produced by reacting an N-substituted-3,4-epoxypiperidine represented by formula (I): wherein R1 represents an aralkyl group having 7 to 24 carbon atoms or an alkyl group having 1 to 12 carbon atoms, with sodium azide in the presence of an inorganic lithium salt.
    Type: Application
    Filed: September 2, 2009
    Publication date: July 7, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Osamu Tokuda, Toshiaki Aikawa, Tetsuya Ikemoto
  • Patent number: 7951977
    Abstract: The present invention provides; a process for producing a compound (IV) comprising a step of reacting a compound (I) with a compound (II) in the presence of an optionally substituted cyclic secondary amine to obtain a compound (III) and a step of sequentially or simultaneously eliminating R1 and R2 from the compound (III), and then cyclizing the R1- and R2-eliminated compound to obtain the compound represented by the formula (IV); a process for producing a high purity compound (IV); an intermediate thereof; and a process for producing an intermediate.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: May 31, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tetsuya Ikemoto, Yosuke Watanabe
  • Patent number: 7939674
    Abstract: The present invention provides a process for producing an aromatic unsaturated compound of the formula (4) wherein Ar represents an optionally substituted aromatic group or an optionally substituted heteroaromatic group, and Y represents an electron withdrawing group, which comprises reacting (a) a compound of the formula (1) Ar—H??(1) wherein Ar has the same meaning as defined above with (b) a compound of the formula (2) wherein Y has the same meaning as defined above, and Z represents a lower alkoxy, or a compound of the formula (3) wherein Y and Z have the same meanings as defined above, in the presence of (c) an acid or a compound which generates a mineral acid by its hydrolysis.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: May 10, 2011
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Weiqi Wang, Tetsuya Ikemoto
  • Publication number: 20110046393
    Abstract: The invention provides a process for production of trans-dibenzoxenopyrrole compounds, in which reduction, leaving group conversion, hydrogenation and methylation are carried out in that order. The process of the invention allows trans-dibenzoxenopyrrole compounds to be produced by a simpler procedure than conventional processes. The invention further provides novel compounds obtained as intermediates in the process, and a process for their production.
    Type: Application
    Filed: July 7, 2008
    Publication date: February 24, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY LIMITED
    Inventors: Weiqi Wang, Tetsuya Ikemoto
  • Publication number: 20110021780
    Abstract: Provided is a manufacturing method for a piperidine-3-ylcarbamate compound in which a pyridine-3-ylcarbamate compound and hydrogen are brought into contact in the presence of a palladium catalyst.
    Type: Application
    Filed: March 18, 2009
    Publication date: January 27, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Yosuke Watanabe, Junichi Yasuoka, Tetsuya Ikemoto