Patents by Inventor Fumio Nagaoka

Fumio Nagaoka 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).

  • Process for sterilization of enzyme contaminated by bacteria
    Patent number: 4612169
    Abstract: An enzyme contaminated by bacteria during preservation or repeated use thereof is sterilized by immersing the enzyme contaminated mass in a polyvalent alcohol. This procedure does not inactivate the enzyme.
    Type: Grant
    Filed: March 21, 1984
    Date of Patent: September 16, 1986
    Assignee: Snow Brand Milk Products Co. Ltd.
    Inventors: Taisuke Iwasaki, Yoshihiko Honda, Fumio Nagaoka, Sadao Aoki, Kazuo Horigome, Ruyzo Imada