Patents by Inventor Yayoi Inoue

Yayoi Inoue 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).

  • Prolonged release microcapsules
    Patent number: 5814342
    Abstract: This invention provides a microcapsule designed for zero order release of a physiologically active polypeptide over a period of at least two months, which is produced by preparing a water-in-oil emulsion comprising an inner aqueous layer containing about 20 to 70% (w/w) of said polypeptide and an oil layer containing a copolymer or homopolymer having a weight-average molecular weight of 7,000 to 30,000, wherein the composition ratio of lactic acid/glycolic acid in the copolymer or homopolymer is 80/10 to 100/0, and then subjecting said water-in oil emulsion to microencapsulation.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: September 29, 1998
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hiroaki Okada, Yayoi Inoue, Yasuaki Ogawa
  • Prolonged release microcapsules
    Patent number: 5643607
    Abstract: This invention provides a microcapsule designed for zero order release of a physiologically active polypeptide over a period of at least two months, which is produced by preparing a water-in-oil emulsion comprising an inner aqueous layer containing about 20 to 70% (w/w) of said polypeptide and an oil layer containing a copolymer or homopolymer having a weight-average molecular weight of 7,000 to 30,000, wherein the composition ratio of lactic acid/glycolic acid in the copolymer or homopolymer is 80/10 to 100/0, and then subjecting said water-in oil emulsion to microencapsulation.
    Type: Grant
    Filed: June 2, 1995
    Date of Patent: July 1, 1997
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hiroaki Okada, Yayoi Inoue, Yasuaki Ogawa
  • Prolonged release microcapsules
    Patent number: 5480656
    Abstract: This invention provides a microcapsule designed for zero order release of a physiologically active polypeptide over a period of at least two months, which is produced by preparing a water-in-oil emulsion comprising an inner aqueous layer containing about 20 to 70% (w/w) of said polypeptide and an oil layer containing a copolymer or homopolymer having a weight-average molecular weight of 7,000 to 30,000, wherein the composition ratio of lactic acid/glycolic acid in the copolymer or homopolymer is 80/10 to 100/0, and then subjecting said water-in oil emulsion to microencapsulation.
    Type: Grant
    Filed: January 31, 1994
    Date of Patent: January 2, 1996
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Hiroaki Okada, Yayoi Inoue, Yasuaki Ogawa