Patents by Inventor Katukiyo Sakurai

Katukiyo Sakurai 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).

  • Crosslinked glycosaminoglycans and their use
    Patent number: 4863907
    Abstract: Crosslinked glycosaminoglycans or salts thereof prepared by crosslinking glycosaminoglycan or salts thereof with a polyfunctional epoxy compound wherein a crosslinking index is 0.005 or more per 1 mole of repeating disaccharides in glycosaminoglycan, and having various medical and cosmetic uses.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: September 5, 1989
    Assignee: Seikagaku Kogyo Co., Ltd.
    Inventors: Katukiyo Sakurai, Yoshio Ueno, Takashi Okuyama
  • Crosslinked hyaluronic acid and its use
    Patent number: 4716224
    Abstract: Crosslinked hyaluronic acid or salts thereof prepared by crosslinking hyaluronic acid or salts thereof with a polyfunctional epoxy compound wherein a crosslinking index or number is 5 or more per 1000 repeating disaccharides composed of glucronic acid in hyaluronic acid and N-acetylglucosamine, and having various medical and cosmetic uses.
    Type: Grant
    Filed: May 2, 1985
    Date of Patent: December 29, 1987
    Assignee: Seikagaku Kogyo Co. Ltd.
    Inventors: Katukiyo Sakurai, Yoshio Ueno, Takashi Okuyama
  • O-xylopyranoside series compounds and methods of use
    Patent number: 4454123
    Abstract: Disclosed is a D-xylopyranoside series compound represented by the following general formula: ##STR1## in which R.sup.1 represents a benzyl group, ##STR2## (X, Y and p are as defined in the specification), ##STR3## --S--R.sup.2 (R.sup.2 is as defined in the specification), or an alkyl group having from 6 to 25 carbon atoms, said compounds alter the nature and amount of proteoglycan on the surface of tumor cells to thereby enhance the immune reaction to said tumor cells.
    Type: Grant
    Filed: March 7, 1983
    Date of Patent: June 12, 1984
    Assignee: Seikagaku Kogyo Co. Ltd.
    Inventors: Ryoji Noyori, Sakaru Suzuki, Minoru Okayama, Katukiyo Sakurai, Shigeyoshi Kamohara, Yoshio Ueno