Patents by Inventor Hiroshi Motai

Hiroshi Motai 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).

  • Alkaline protease, alkaline protease gene, recombinant DNA, DNA fragment for the expression of gene, and process for the production of alkaline protease
    Patent number: 5254470
    Abstract: Alkaline protease which has leucine or isoleucine in the place of valine at the amino acid number 40 of wild type alkaline protease, a gene encoding the amino acid sequence of alkaline protease which has the substitution as described above, a recombinant DNA comprising said gene, a method of producing the above described alkaline protease, and a DNA fragment used for the expression of a gene.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: October 19, 1993
    Assignee: Japanese Research and Development Association for Improvement of Enzyme Function in Food Industry
    Inventors: Seiji Murakami, Hiroki Tatsumi, Yoshihiro Ogawa, Eiichi Nakano, Hiroshi Motai, Shigetoshi Sugio, Atsushi Masaki, Yutaka Ishida, Kohji Murakami, Haruhide Kawabe, Hirofumi Arimura
  • Process for producing protease by cultivating a protease-producing mold in a liquid medium
    Patent number: 4879235
    Abstract: A process for producing protease by cultivating a protease-producing mold in a liquid medium, which is characterized by continuously adding a liquid medium containing a protein material to the culture medium after the substantial termination of proliferation of the mold cells.
    Type: Grant
    Filed: November 21, 1986
    Date of Patent: November 7, 1989
    Assignee: The Japanese Research and Development Association for Bioreactor System
    Inventors: Hiroshi Motai, Yaichi Fukushima, Tetsuro Fukase, Harumichi Itoh
  • Microorganism or enzyme immobilization with a mixture of alginate and silica sol
    Patent number: 4797358
    Abstract: A microorganism or enzyme is mixed with an alginate and a silica sol in the presence of water to obtain a liquid mixture having a pH of 3 to 10 and containing an alginate concentration of 0.5 to 3.5% (w/v) and a silica concentration originating from the silica sol of 0.5 to 35% (w/v). The mixture is contacted with a gelling agent in the form of an aqueous solution to obtain a gel containing the microorganism or enzyme.
    Type: Grant
    Filed: May 28, 1985
    Date of Patent: January 10, 1989
    Assignees: Kikkoman Corporation, Fuji-Davison Chemical, Ltd.
    Inventors: Hiroshi Motai, Yaichi Fukushima, Katsumichi Osaki, Katutoshi Okamura, Kazutaka Imai
  • Process for producing seasoning
    Patent number: 4684527
    Abstract: A process for producing a seasoning is disclosed wherein a hydrolyzate of soy sauce koji prepared from soy sauce raw materials, in a liquid state at a pH of 2.5 to 8.0, is contacted with an immobilized peptidase and/or immobilized glutaminase in the presence of sodium chloride to react therewith.
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: August 4, 1987
    Assignee: Kikkoman Corporation
    Inventors: Hiroshi Motai, Yaichi Fukushima, Takashi Ishiyama