Patents by Inventor Takashi Kamikawa

Takashi Kamikawa 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).

  • Patent number: 11767401
    Abstract: The present invention provides a gel containing a water-absorbing crosslinked polymer, and a condensate of a reactive silicon compound having at least one selected from the group consisting of an acidic dissociative group, an acidic dissociative group in a salt form, and a derivative group of an acidic dissociative group.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: September 26, 2023
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Taigo Kashiwabara, Ayumi Ogawa, Takashi Kamikawa
  • Publication number: 20210246269
    Abstract: The present invention provides a gel containing a water-absorbing crosslinked polymer, and a condensate of a reactive silicon compound having at least one selected from the group consisting of an acidic dissociative group, an acidic dissociative group in a salt form, and a derivative group of an acidic dissociative group.
    Type: Application
    Filed: June 25, 2019
    Publication date: August 12, 2021
    Applicant: Sumitomo Chemical Company, Limited
    Inventors: Taigo KASHIWABARA, Ayumi OGAWA, Takashi KAMIKAWA
  • Patent number: 11045796
    Abstract: A process for producing an aromatic compound in high yield and a palladium complex are provided. The palladium complex is represented by formula (D) or formula (D?): In formula (D), X represents a chlorine atom, A represents an alkyl group having 1 to 3 carbon atoms, B represents an alkyl group having 4 to 20 carbon atoms or a cycloalkyl group having 5 to 10 carbon atoms, R4 and R5 each independently represent a hydrogen atom, a fluorine atom, or an alkoxy group having 1 to 20 carbon atoms, and R6, R7 and R8 represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or a heteroaryl group having 4 to 20 carbon atoms. In formula (D?), X, A, B and R4 to R8 are the same as defined above.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: June 29, 2021
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Nanase Sakugawa, Takashi Kamikawa
  • Publication number: 20200407515
    Abstract: The present invention provides a gel having an interpenetrating network formed from a first network structure and a second network structure, the first network structure being composed of a first crosslinked polymer formed from at least one noncrosslinkable compound selected from the group consisting of a compound represented by the following formula (I) and a compound represented by the following formula (II), and at least one crosslinkable compound selected from the group consisting of a compound represented by the following formula (III) and a compound represented by the following formula (IV), and the second network structure being composed of a second crosslinked polymer having at least one selected from the group consisting of an acidic dissociative group, an acidic dissociative group in a salt form, and a derivative group of an acidic dissociative group: wherein the groups are as defined in the DESCRIPTION.
    Type: Application
    Filed: March 29, 2018
    Publication date: December 31, 2020
    Inventors: Atsushi Yamamoto, Takashi KAMIKAWA
  • Patent number: 10765993
    Abstract: The present invention provides a gel containing a crosslinked polymer having at least one selected from the group consisting of an acidic dissociative group, an acidic dissociative group in a salt form, and a derivative group of an acidic dissociative group, and a condensate of a compound represented by the following formula (I): Si{R1—N(R2)(R3)}(OR4)(OR5)(R6) (wherein each group is as defined in the DESCRIPTION).
    Type: Grant
    Filed: October 11, 2017
    Date of Patent: September 8, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Taigo Kashiwabara, Ayumi Aoki, Takashi Kamikawa
  • Publication number: 20200047115
    Abstract: The present invention provides a gel containing a crosslinked polymer having at least one selected from the group consisting of an acidic dissociative group, an acidic dissociative group in a salt form, and a derivative group of an acidic dissociative group, and a condensate of a compound represented by the following formula (I): Si{R1—N(R2)(R3)}(OR4)(OR5)(R6) (wherein each group is as defined in the DESCRIPTION).
    Type: Application
    Filed: October 11, 2017
    Publication date: February 13, 2020
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Taigo KASHIWABARA, Ayumi AOKI, Takashi KAMIKAWA
  • Publication number: 20180369799
    Abstract: A process for producing an aromatic compound in high yield and a palladium complex are provided. The palladium complex is represented by formula (D) or formula (D?): In formula (D), X represents a chlorine atom, A represents an alkyl group having 1 to 3 carbon atoms, B represents an alkyl group having 4 to 20 carbon atoms or a cycloalkyl group having 5 to 10 carbon atoms, R4 and R5 each independently represent a hydrogen atom, a fluorine atom, or an alkoxy group having 1 to 20 carbon atoms, and R6, R7 and R8 represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms or a heteroaryl group having 4 to 20 carbon atoms. In formula (D?), X, A, B and R4 to R8 are the same as defined above.
    Type: Application
    Filed: November 28, 2016
    Publication date: December 27, 2018
    Inventors: Nanase SAKUGAWA, Takashi KAMIKAWA
  • Patent number: 9453103
    Abstract: A method is provided for producing an aromatic compound, including a step of mixing a compound represented by formula (A) and a compound represented by formula (B): in the presence of at least one phosphine compound selected from the group consisting of a phosphine represented by formula (C) and a phosphonium salt represented by formula (D): a base, a palladium compound, and an aprotic organic solvent.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: September 27, 2016
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Seiji Oda, Takashi Kamikawa
  • Patent number: 9238665
    Abstract: A method is provided for producing an aromatic compound, including a step of mixing a compound represented by formula (A) and a compound represented by formula (B): in the presence of at least one phosphine compound selected from the group consisting of a phosphine represented by formula (C) and a phosphonium salt represented by formula (F): a base, a palladium compound, and an aprotic organic solvent.
    Type: Grant
    Filed: July 5, 2013
    Date of Patent: January 19, 2016
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Seiji Oda, Takashi Kamikawa
  • Publication number: 20150322101
    Abstract: A method is provided for producing an aromatic compound, including a step of mixing a compound represented by formula (A) and a compound represented by formula (B): in the presence of at least one phosphine compound selected from the group consisting of a phosphine represented by formula (C) and a phosphonium salt represented by formula (F): a base, a palladium compound, and an aprotic organic solvent.
    Type: Application
    Filed: July 5, 2013
    Publication date: November 12, 2015
    Inventors: Seiji ODA, Takashi KAMIKAWA
  • Publication number: 20150322199
    Abstract: A method is provided for producing an aromatic compound, including a step of mixing a compound represented by formula (A) and a compound represented by formula (B): in the presence of at least one phosphine compound selected from the group consisting of a phosphine represented by formula (C) and a phosphonium salt represented by formula (D): a base, a palladium compound, and an aprotic organic solvent.
    Type: Application
    Filed: July 5, 2013
    Publication date: November 12, 2015
    Inventors: Seiji ODA, Takashi KAMIKAWA
  • Patent number: 8598349
    Abstract: A method for manufacturing a conjugated aromatic compound comprising reacting an aromatic compound (A) substituted with a halogen as a leaving group with an aromatic compound (A) or an aromatic compound (B) substituted with a halogen as a leaving group and is structurally different from the aromatic compound (A), in the presence of (i) a nickel compound, (ii) a metal reducing agent, (iii) at least one ligand (L1) selected from the group consisting of a 2,2?-bipyridine compound having at least one electron-withdrawing group, and a 1,10-phenanthroline compound having at least one electron-withdrawing group, and (iv) at least one ligand (L2) selected from the group consisting of a 2,2?-bipyridine compound having at least one electron-releasing group, and a 1,10-phenanthroline compound having at least one electron-releasing group.
    Type: Grant
    Filed: January 18, 2010
    Date of Patent: December 3, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Seiji Oda, Takashi Kamikawa, Akio Tanaka
  • Patent number: 8293905
    Abstract: A bipyridine compound represented by the formula (1): wherein R1, R2 and R3 each independently represent a C1-C10 alkyl group which may be substituted etc., and R4, R5, R6, R7 and R8 each independently represent a hydrogen atom etc., a transition metal complex obtained by contacting a bipyridine compound represented by the formula (1) with a compound of a transition metal belonging to Group 9, 10 or 11, and a method for production of a conjugated aromatic compound comprising reacting an aromatic compound (A) wherein one or two leaving groups are bonded to an aromatic ring with an aromatic compound (A) having the same structure as that of the above-mentioned aromatic compound (A) or an aromatic compound (B) being structurally different from the above-mentioned aromatic compound (A) and having one or two leaving groups bonded to an aromatic ring, in the presence of the transition metal complex.
    Type: Grant
    Filed: June 18, 2008
    Date of Patent: October 23, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Taku Asaumi, Takashi Kamikawa
  • Patent number: 8237002
    Abstract: A method for producing an unsaturated organic compound represented by the formula (3): (Y1)m-1—R1—R2—(Y2)n-1??(3) wherein Y1 represents R2 or X1, and Y2 represents R1 or B(X2)2, which comprises reacting a compound represented by the formula (1): R1(X1)m??(1) wherein R1 represents an aromatic group or the like, X1 represents a leaving group and m represents 1 or 2, with a compound represented by the formula (2): R2{B(X2)2}n??(2) wherein R2 represents an aromatic group or the like, X2 represents a hydroxyl group or the like, and n represents 1 or 2, in the presence of (a) a nickel compound selected from a nickel carboxylate, nickel nitrate and a nickel halide, (b) a phosphine compound such as 1,4-bis(dicyclohexylphosphino) butane, (c) an amine selected from a primary amine and a diamine such as N,N,N?,N?-tetramethyl-1,2-ethanediamine, and (d) an inorganic base.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: August 7, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Taku Asaumi, Takashi Kamikawa
  • Patent number: 8236920
    Abstract: A dihalobiphenyl compound represented by the formula (1): wherein A represents an amino group substituted with one or two C1-C20 hydrocarbon groups or a C1-C20 alkoxy group, R1 represents a fluorine atom, a C1-C20 alkyl group, etc., X1 represents a chlorine atom, a bromine atom or an iodine atom, an k represents an integer of 0 to 3, and a polyarylene comprising a repeating unit represented by the formula (2): wherein A, R1 and k represent the same meanings as defined above.
    Type: Grant
    Filed: September 6, 2006
    Date of Patent: August 7, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Noriyuki Hida, Seiji Oda, Takashi Kamikawa, Katsuhiro Suenobu
  • Patent number: 8088883
    Abstract: A transition metal complex obtained by contacting a bipyridine compound represented by the formula (1): wherein R1, R2 and R3 represent a C1-C10 alkyl group which may be substituted, etc., and R4 and R5 represent a hydrogen atom etc., with a compound of a transition metal belonging to Group 9, 10 or 11, and a process for producing a conjugated aromatic compound comprising reacting an aromatic compound (A) wherein one or two leaving groups are bonded to an aromatic ring with an aromatic compound (A) having the same structure as that of the above-mentioned aromatic compound (A) or an aromatic compound (B) being structurally different from the above-mentioned aromatic compound (A) and having one or two leaving groups bonded to an aromatic ring, in the presence of said transition metal complex.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: January 3, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Taku Asaumi, Takashi Kamikawa
  • Publication number: 20110275859
    Abstract: A method for manufacturing a conjugated aromatic compound comprising reacting an aromatic compound (A) wherein one or two leaving groups selected from the group consisting of an iodine atom, a bromine atom and a chlorine atom are bonded to an aromatic ring and the aromatic compound (A) does not have (c1) a group represented by the following formula (10): wherein A1 represents a C1-C20 alkoxy group etc.; (g1) a C1-C20 alkyl group which may be substituted with a fluorine atom etc.; and (h1) a C2-C20 acyl group which may be substituted with a fluorine atom etc.
    Type: Application
    Filed: January 18, 2010
    Publication date: November 10, 2011
    Inventors: Seiji Oda, Takashi Kamikawa, Akio Tanaka
  • Publication number: 20110275780
    Abstract: A method for producing a conjugated aromatic compound comprising reacting an aromatic compound (A) represented by the formula (1) wherein n represents 0 or 1, m represents (3-n), R1 represents a C1-C20 alkyl group etc., R2 is independently in each occurrence a hydrogen atom etc., X1 and X3 independently each represent a chlorine atom etc., with an aromatic compound (A) having the same structure as that of the above-mentioned aromatic compound (A) or an aromatic compound (B) wherein the aromatic compound (B) is structurally different from the above-mentioned aromatic compound (A) and one or two leaving groups selected from the group consisting of an iodine atom, a bromine atom and a chlorine atom are bonded to an aromatic ring, in the presence of a nickel compound, a metal reducing agent, and a 2,2?-bipyridine compound having at least one electron-releasing group and having no substituent at 3-, 6-, 3?- and 6?-positions.
    Type: Application
    Filed: January 18, 2010
    Publication date: November 10, 2011
    Inventors: Seiji Oda, Takashi Kamikawa
  • Publication number: 20110046336
    Abstract: A transition metal complex obtained by contacting a bipyridine compound represented by the formula (1): wherein R1, R2 and R3 represent a C1-C10 alkyl group which may be substituted, etc., and R4 and R5 represent a hydrogen atom etc., with a compound of a transition metal belonging to Group 9, 10 or 11, and a process for producing a conjugated aromatic compound comprising reacting an aromatic compound (A) wherein one or two leaving groups are bonded to an aromatic ring with an aromatic compound (A) having the same structure as that of the above-mentioned aromatic compound (A) or an aromatic compound (B) being structurally different from the above-mentioned aromatic compound (A) and having one or two leaving groups bonded to an aromatic ring, in the presence of said transition metal complex.
    Type: Application
    Filed: July 25, 2008
    Publication date: February 24, 2011
    Inventors: Taku Asaumi, Takashi Kamikawa
  • Publication number: 20110046380
    Abstract: A method for producing an unsaturated organic compound represented by the formula (3): (Y1)m-1—R1—R2—(Y2)n-1??(3) wherein Y1 represents R2 or X1, and Y2 represents R1 or B(X2)2, which comprises reacting a compound represented by the formula (1): R1(X1)m??(1) wherein R1 represents an aromatic group or the like, X1 represents a leaving group and m represents 1 or 2, with a compound represented by the formula (2): R2{B(X2)2}n??(2) wherein R2 represents an aromatic group or the like, X2 represents a hydroxyl group or the like, and n represents 1 or 2, in the presence of (a) a nickel compound selected from a nickel carboxylate, nickel nitrate and a nickel halide, (b) a phosphine compound such as 1,4-bis(dicyclohexylphosphino) butane, (c) an amine selected from a primary amine and a diamine such as N,N,N?,N?-tetramethyl-1,2-ethanediamine, and (d) an inorganic base.
    Type: Application
    Filed: April 28, 2009
    Publication date: February 24, 2011
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Taku Asaumi, Takashi Kamikawa