Patents by Inventor Toshio Yanaki

Toshio Yanaki 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).

  • Controlled release preparation for bioactive substances
    Patent number: 5532305
    Abstract: To provide a base suitable for a controlled release preparation and the controlled release preparation. A bioactive substance(s) is introduced in a poly-ion complex of hyaluronic acid and a cationic polyacrylic acid derivative(s).
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: July 2, 1996
    Assignee: Shiseido Company Ltd.
    Inventors: Fumiaki Matsuzaki, Toshio Yanaki, Michihiro Yamaguchi
  • Process for producing a condensed polysaccharide
    Patent number: 4965354
    Abstract: A process for producing a condensed polysaccharide, which comprises heat-melting at least one compound selected from the group consisting of glucose, mannose, galactose, xylose and arabinose, which contains from 8 to 180 ppm of hydrogen chloride, followed by dehydration condensation under reduced pressure.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: October 23, 1990
    Assignee: Taito Company, Ltd.
    Inventors: Toshio Yanaki, Shigeki Maehata, Tomoko Satoh, Shinji Ikeda
  • Method for a specific depolymerization of a polysaccharide having a rod-like helical conformation
    Patent number: 4505757
    Abstract: The description describes a process for depolymerization of a polysaccharide having a rod-like helical structure, comprising a step for forcing a solution of the polysaccharide in a solvent (solvent A) through a capillary at a high shear rate, to produce a lower molecular weight degraded polysaccharide, which has the same repeating unit and the same helical structure, as those of the original polysaccharide.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: March 19, 1985
    Assignees: Kaken Pharmaceutical Co. Ltd., Taito Co., Ltd.
    Inventors: Takemasa Kojima, Kengo Tabata, Toshio Yanaki, Mitsuaki Mitani