Patents by Inventor Katsutoshi Aihara

Katsutoshi Aihara 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
  • Method for preparing pertussis toxin toxoid using HcHo and amino acids
    Patent number: 4996299
    Abstract: Disclosed is a method for preparing pertussis toxin toxoid by a treatment pertussis toxin with formaldehyde, which comprises carrying out said treatment in the presence of lysine or glycine in combination with N-acetyltriptophan. The resultant toxoid does not exhibit toxicity reversion, thereby making the toxoid highly suitable for use in pertussis vaccines.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: February 26, 1991
    Assignee: Juridical Foundation The Chemo-Sero-Therapeutic Research Institute
    Inventors: Akihiro Ginnaga, Kazunori Morokuma, Katsutoshi Aihara, Mitsuo Sakoh