Patents by Inventor Toshihide Takemoto

Toshihide Takemoto 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: 9617292
    Abstract: The purpose of the invention is to provide a novel organometallic compound that can be utilized as a catalyst having high generality, high activity, and excellent functional group selectivity. The invention pertains to a novel organometallic compound represented by general formula (1) that catalyzes a reductive amination reaction.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: April 11, 2017
    Assignee: Kanto Kagaku Kabushiki Kaisha
    Inventors: Masahito Watanabe, Toshihide Takemoto, Kouichi Tanaka, Kunihiko Murata
  • Publication number: 20160060282
    Abstract: The purpose of the invention is to provide a novel organometallic compound that can be utilized as a catalyst having high generality, high activity, and excellent functional group selectivity. The invention pertains to a novel organometallic compound represented by general formula (1) that catalyzes a reductive amination reaction.
    Type: Application
    Filed: April 22, 2014
    Publication date: March 3, 2016
    Applicant: Kanto Kagaku Kabushiki Kaisha
    Inventors: Masahito Watanabe, Toshihide Takemoto, Kouichi Tanaka, Kunihiko Murata
  • Patent number: 8558033
    Abstract: The problem to be resolved by the present invention is to provide a method for efficiently synthesizing optically active lower aliphatic alcohols that have difficulty in separation from organic solvents, without using a special reactor. The present invention relates to a method for producing an optically active aliphatic alcohol having a fluorine atom at ? position, wherein an optically active alcohol is produced by reacting an aliphatic ketone having a fluorine atom at ? position in water using a formate, under the presence of an asymmetric catalyst represented by general formula (1) and an acid.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: October 15, 2013
    Assignee: Kanto Kagaku Kabushiki Kaisha
    Inventors: Takeaki Katayama, Toshihide Takemoto, Kunihiko Murata
  • Publication number: 20110319671
    Abstract: The problem to be resolved by the present invention is to provide a method for efficiently synthesizing optically active lower aliphatic alcohols that have difficulty in separation from organic solvents, without using a special reactor. The present invention relates to a method for producing an optically active aliphatic alcohol having a fluorine atom at ? position, wherein an optically active alcohol is produced by reacting an aliphatic ketone having a fluorine atom at ? position in water using a formate, under the presence of an asymmetric catalyst represented by general formula (1) and an acid.
    Type: Application
    Filed: June 28, 2011
    Publication date: December 29, 2011
    Applicant: Kanto Kagaku Kabushiki Kaisha
    Inventors: Takeaki Katayama, Toshihide Takemoto, Kunihiko Murata
  • Publication number: 20100069683
    Abstract: The present invention provides an asymmetric reduction catalyst effective in preparing optically-active alcohol compounds having various functional groups, and a process for preparing optically-active alcohol compounds using said asymmetric reduction catalyst. The organic metal compound of the present invention is represented by the following general formula (1): wherein R1 and R2 may be mutually identical or different, and are an alkyl group, a phenyl group, a naphthyl group, a cycloalkyl group, or an alicyclic ring formed by binding R1 and R2, which may have a substituent; R3 is a hydrogen atom or an alkyl group; Cp is a cyclopentadienyl group, which may have a substituent, bound to M1 via a ? bond; X1 is a halogen atom or a hydrido group; M1 is rhodium or iridium; and * denotes asymmetric carbon.
    Type: Application
    Filed: August 28, 2009
    Publication date: March 18, 2010
    Applicant: Kanto Kagaku Kabushiki Kaisha
    Inventors: Takashi Miki, Junichi Hori, Toshihide Takemoto, Noriyuki Utsumi, Takeaki Katayama, Masahito Watanabe, Kunihiko Murata
  • Publication number: 20090062573
    Abstract: The present invention provides an asymmetric reduction catalyst effective in preparing optically-active alcohol compounds having various functional groups, and a process for preparing optically-active alcohol compounds using said asymmetric reduction catalyst. The organic metal compound of the present invention is represented by the following general formula (1): wherein R1 and R2 may be mutually identical or different, and are an alkyl group, a phenyl group, a naphthyl group, a cycloalkyl group, or an alicyclic ring formed by binding R1 and R2, which may have a substituent; R3 is a hydrogen atom or an alkyl group; Cp is a cyclopentadienyl group, which may have a substituent, bound to M1 via a ? bond; X1 is a halogen atom or a hydrido group; M1 is rhodium or iridium; and * denotes asymmetric carbon.
    Type: Application
    Filed: July 18, 2008
    Publication date: March 5, 2009
    Applicant: Kanto Kagaku Kabushiki Kaisha
    Inventors: Takashi Miki, Junichi Hori, Toshihide Takemoto, Noriyuki Utsumi, Takeaki Katayama, Masahito Watanabe, Kunihiko Murata
  • Patent number: 4320189
    Abstract: A novel photopolymerizable composition comprising (a) a non-gaseous ethylenically unsaturated compound, (b) a thermoplastic organic polymer binder, (c) a photopolymerization initiator and (d) a specific s-triazine compound provides improved adhesion of a photopolymer prepared therefrom to a substrate even in aqueous plating or etching solutions.
    Type: Grant
    Filed: September 29, 1980
    Date of Patent: March 16, 1982
    Assignee: Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Tadashi Taguchi, Toshihide Takemoto, Noboru Fujikawa, Mitsuo Kohno