Patents by Inventor Masao Onisi

Masao Onisi 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).

  • Method for preventing alveolar pyorrhea
    Patent number: 4159317
    Abstract: Compositions for the prevention of pyorrhea alveolaris containing a fructan-degrading enzyme at a ratio ranging from 1 to 300 activity units per g. or ml. of the composition.
    Type: Grant
    Filed: November 28, 1977
    Date of Patent: June 26, 1979
    Assignee: Sankyo Co., Ltd.
    Inventors: Masao Onisi, Keijiro Ishibashi, Soichiro Amao