Patents by Inventor Chikako Udagawa

Chikako Udagawa 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).

  • Product of coprecipitation of sparingly soluble substance and water-soluble polymer and process for producing the same
    Publication number: 20070167402
    Abstract: The present invention provides a coprecipitate of 2-(1-isopropoxycarbonyloxy-2-methylpropyl)-7,8-dimethoxy-4(5H), 10-dio xo-2H-1,2,3-triazolo[4,5-c][1]benzazepine and a water-soluble polymer, excellent in solubility and absorbability.
    Type: Application
    Filed: June 21, 2004
    Publication date: July 19, 2007
    Applicant: Meiji Seika Kaisha, Ltd.
    Inventors: Toyoaki Ishikura, Chikako Udagawa, Masato Misaka, Kenji Suemune, Shinichi Kitahara, Kiyoko Ono, Akihiro Koyanagi
  • Amorphous substance of tricyclic triazolobenzazepine derivative
    Patent number: 7229985
    Abstract: Disclosed are 2-(1-isopropoxycarbonyloxy-2-methylpropyl)-7,8-dimethoxy-4(5H), 10-dioxo-2H-1,2,3-triazolo[4,5-c][1]benzazepine, which has been rendered amorphous and possesses improved absorption and dissoluvability, and a pharmaceutical composition comprising the same. Also disclosed are processes for producing 2-(1-isopropoxycarbonyloxy-2-methylpropyl)-7,8-dimethoxy-4(5H), 10-dioxo-2H-1,2,3-triazolo[4,5-c][1]benzazepine, which has been rendered amorphous, and a pharmaceutical composition comprising the same.
    Type: Grant
    Filed: December 25, 2002
    Date of Patent: June 12, 2007
    Assignee: Meiji Seika Kaisha, Ltd.
    Inventors: Toyoaki Ishikura, Takayuki Ishizawa, Kenji Suemune, Mayumi Ishiwata, Chikako Udagawa
  • Amorphous substance of tricyclic triazolobenzazepine derivative
    Publication number: 20050130955
    Abstract: Disclosed are 2-(1-isopropoxycarbonyloxy-2-methylpropyl)-7,8-dimethoxy-4(5H), 10-dioxo-2H-1,2,3-triazolo[4,5-c][1]benzazepine, which has been rendered amorphous and possesses improved absorption and dissoluvability, and a pharmaceutical composition comprising the same. Also disclosed are processes for producing 2-(1-isopropoxycarbonyloxy-2-methylpropyl)-7,8-dimethoxy-4(5H), 10-dioxo-2H-1,2, 3-triazolo[4,5-c][1]benzazepine, which has been rendered amorphous, and a pharmaceutical composition comprising the same.
    Type: Application
    Filed: December 25, 2002
    Publication date: June 16, 2005
    Applicant: MEIJI SEIKA KAISHA, LTD
    Inventors: Toyoaki Ishikura, Takayuki Ishizawa, Kenji Suemune, Mayumi Ishiwata, Chikako Udagawa
  • Lipid double-chain derivative containing polyoxyethylene
    Patent number: 5786387
    Abstract: A compound represented by the formula (I) is disclosed. The compound of the formula (I) is useful as a fine particle drug carrier. When used as the fine particle drug carrier, the compound efficiently avoids a reticuloendothelial system and has a long circulation time in blood.
    Type: Grant
    Filed: January 25, 1996
    Date of Patent: July 28, 1998
    Assignee: Meiji Seika Kabushiki Kaisha
    Inventors: Hiroshi Watanabe, Kumi Taniguchi, Chikako Udagawa, Takashi Ando, Satoru Nakabayashi