Patents by Inventor Hiromitsu Kigawa

Hiromitsu Kigawa 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).

  • Mutanase-containing oral compositions
    Patent number: 5741487
    Abstract: An oral composition contains mutanase prepared from a culture which is obtained by cultivating a mutanase-producing microorganism belonging to the genus Bacillus having negative protease producibility. The oral composition is effective for suppressing dental plaque formation while the mutanase possesses commercially acceptable stability in the oral composition.
    Type: Grant
    Filed: February 26, 1997
    Date of Patent: April 21, 1998
    Assignee: Lion Corporation
    Inventors: Yoshio Asai, Motoyasu Ohdera, Hiromitsu Kigawa, Isao Shimotsuura, Yoshiko Yokobori, Masanori Hirano, Koji Shibuya