Patents by Inventor Nobutoshi Watari

Nobutoshi Watari 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).

  • Compound for medicinal ingredient and hyaluronic acid and process for producing the same
    Patent number: 5733891
    Abstract: A compound of hyaluronic acid and a medicinal ingredient produced by the convalent bonding (preferably amide bonding) of hyaluronic acid and the medicinal ingredient, and a process for preparing the same.The hyaluronic acid portion is completely decomposed by metabolism in the action region, whereby the medicinal ingredient is gradually and quantitatively released.
    Type: Grant
    Filed: January 30, 1995
    Date of Patent: March 31, 1998
    Assignee: Shiseido Co., Ltd.
    Inventors: Kazuo Akima, Yuhei Iwata, Kayoko Matsuo, Nobutoshi Watari