Patents by Inventor Tadatomo Kawai

Tadatomo Kawai 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).

  • Intracorporeally injectable composition for implanting highly concentrated cross-linked atelocollagen
    Patent number: 5314874
    Abstract: The present invention provides an intracorporeally injectable non-toxic composition of atelocollagen having an excellent, long-lasting skin swelling effect due to its low viscosity, good fluidity, easy injectability and low antigenicity (without calcification) properties. The composition is prepared by treating an aqueous suspension of atelocollagen with a buffer for physiological conditions. The suspension can have atelocollagen content of 55 to 75 mg/ml, where approximately 20 to 100% by weight of atelocollagen is cross-linked with a polyepoxy compound.
    Type: Grant
    Filed: April 15, 1992
    Date of Patent: May 24, 1994
    Assignee: Koken Co., Ltd.
    Inventors: Teruo Miyata, Tadatomo Kawai