Patents by Inventor Takashige Oka

Takashige Oka 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).

  • Bone-treating devices and their manufacturing method
    Patent number: 5431652
    Abstract: Bone-treating devices made of biodegradable polymers having a high-density and a high-orientation along the major axis, which have a density of 1.260 g/cm.sup.3 or more (when measured by the sink and float method) and which possess the bending strength and the bending strength-retaining characteristic defined by the following equations:A.gtoreq.B.gtoreq.23 (kgf/mm.sup.2) (1)B/A.gtoreq.0.85 (2)wherein A is the initial bending strength and B is the bending strength after 90-days immersion of the devices in a phosphate buffer at 37.degree. C. and preparing the same.
    Type: Grant
    Filed: December 22, 1992
    Date of Patent: July 11, 1995
    Assignees: Gunze Limited, Agency of Industrial Science and Technology
    Inventors: Takeshi Shimamoto, Takashige Oka, Minori Adachi, Suon H. Hyon, Kazuo Nakayama, Akira Kaito
  • Reinforcement sheet
    Patent number: 5118569
    Abstract: The disclosed reinforcement sheet is a knitted fabric formed from a plurality of reinforcing yarns 5 and a plurality of matrix yarns 9, wherein the reinforcing yarns are held in the linear state without being bent, arranged in parallel to and spaced from one another in a matrix knitting structure, and the matrix yarns cover the linear reinforcing yarns, without bending the linear reinforcing yarns, to form the matrix knitting structure.
    Type: Grant
    Filed: April 25, 1990
    Date of Patent: June 2, 1992
    Assignees: Teijin Limited, Gunze Limited
    Inventors: Toshimasa Kuroda, Yoshimi Tanaka, Takashige Oka, Kouichi Yamada, Nobutaka Kiyohara, Akihiro Sato, Mitsuo Hosoi