Patents by Inventor Naoyuki Kishi

Naoyuki Kishi 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).

  • Intermediates for the synthesis of benzimidazole derivatives and a process for the preparation thereof
    Patent number: 6753347
    Abstract: This invention provides a process for the preparation of a benzimidazole derivative (I) or a pharmaceutically acceptable salt thereof, wherein R1 is C1-C6 alkyl, C1-C6 alkoxyl, etc., R2 is C1-C6 alkyl, and R3 is hydrogen or a protecting group, which exhibits excellent hyopoglycemic action, said process comprising condensation of an amine derivative (III) with a carboxylic acid derivatives (II) to afford a compound (IV), followed by cyclization of compound (IV) in the presence of an acid.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: June 22, 2004
    Assignee: Sankyo Company, Limited
    Inventors: Naoyuki Kishi, Yoshitaka Nakamura, Narumi Abe, Toyonori Takebayashi
  • Intermediates for the synthesis of benzimidazole derivatives and a process for the preparation thereof
    Publication number: 20030199580
    Abstract: This invention provides a process for the preparation of a benzimidazole derivative (I) or a pharmaceutically acceptable salt thereof, 1
    Type: Application
    Filed: October 16, 2002
    Publication date: October 23, 2003
    Applicant: SANKYO COMPANY, LIMITED
    Inventors: Naoyuki Kishi, Yoshitaka Nakamura, Narumi Abe, Toyonori Takebayashi
  • Intermediates for the synthesis of benzimidazole derivatives and a process for the preparation thereof
    Patent number: 6525220
    Abstract: This invention provides a process for the preparation of a benzimidazole derivative (I) or a pharmaceutically acceptable salt thereof, wherein R1 is C1-C6 alkyl, C1-C6 alkoxyl, etc., R2 is C1-C6 alkyl, and R3 is hydrogen or a protecting group, which exhibits excellent hyopoglycemic action, said process comprising condensation of an amine derivative (III) with a carboxylic acid derivatives (II) to afford a compound (IV), followed by cyclization of compound (IV) in the presence of an acid.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: February 25, 2003
    Assignee: Sankyo Company, Limited
    Inventors: Naoyuki Kishi, Yoshitaka Nakamura, Narumi Abe, Toyonori Takebayashi
  • Intermediates for the synthesis of benzimidazole derivatives and a process for the preparation thereof
    Publication number: 20030008907
    Abstract: This invention provides a process for the preparation of a benzimidazole derivative (I) or a pharmaceutically acceptable salt thereof, 1
    Type: Application
    Filed: December 19, 2001
    Publication date: January 9, 2003
    Applicant: SANKYO COMPANY, LIMITED
    Inventors: Naoyuki Kishi, Yoshitaka Nakamura, Narumi Abe, Toyonori Takebayashi
  • Road marking composition
    Patent number: 4301050
    Abstract: A road marking composition comprising a resin having a melt viscosity of from about 30 to 80 cps at 150.degree. C. and a modifier composed of at least one metal oxide of at least one metal selected from Groups II and IV of short form of the Periodic Table. The resin may be rosin-modified maleic resin, hydrogenated resin, rosin ester, polyamide, and petroleum resin. Optionally, a polar wax and/or a surfactant may be present. Fillers and extenders include: pigments, glass beads, clay, plaster, slaked lime, alumina diatomaceous earth, sand, and plasticizers.
    Type: Grant
    Filed: June 9, 1980
    Date of Patent: November 17, 1981
    Assignee: Atom Chemical Paint Co., Ltd.
    Inventors: Shinichi Masuda, Tsugio Tanaka, Naoyuki Kishi, Yukio Nagasaka