Patents by Inventor Kazufumi Yagyu

Kazufumi Yagyu 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).

  • Pyrogen adsorbent containing amide groups
    Patent number: 5279821
    Abstract: Here is disclosed a water-insoluble pyrogen adsorbent composed of a polymer possessing amide groups optionally modified, said polymer being, e.g., a poly amino acid, a nylon, on a polyacrylamide.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: January 18, 1994
    Assignees: Chuichi Hirayama, Hirotaka Ihara, Ajinomoto Co., Inc.
    Inventors: Chuichi Hirayama, Hirotaka Ihara, Shunsei Tsunoda, Katsutoshi Aihara, Kazufumi Yagyu, Masao Honma