Patents by Inventor Kenichiro Takayama

Kenichiro Takayama 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 producing orotic acid by fermentation
    Patent number: 5013656
    Abstract: A process is disclosed for producing orotic acid, the process involves culturing in a medium a microorganism of the genus Corynebacterium which is capable of producing orotic acid and has resistance to a pyrimidine analogue or to both a pyrimidine analogue and a sulfa drug, until orotic acid is accumulated in the culture, and recovering orotic acid therefrom.
    Type: Grant
    Filed: October 12, 1988
    Date of Patent: May 7, 1991
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kenichiro Takayama, Tomoko Matsunaga
  • Process for producing menaquinone-4
    Patent number: 4849354
    Abstract: Menaquinone-4 is produced by cultivating in culture media a microorganism belonging to the genus Corynebacterium Arthrobactor, Brevibacterium, Microbacterium, Cutobacterium, Auteobacterium or Flavobacterium which produces menaquinone-4 and recovering the same.
    Type: Grant
    Filed: May 14, 1986
    Date of Patent: July 18, 1989
    Assignee: Kyowa Hakko Kogyo Co., Ltd
    Inventors: Kenichiro Takayama, Yukoh Arai, Susumu Tomohiro, Shizuko Shirasuna
  • Novel aldehyde oxidase and process for producing same
    Patent number: 4666842
    Abstract: Disclosed is a new enzyme, aldehyde oxidase, which catalyzes the oxidation of an aldehyde to a corresponding acid but does not have any catalytic action upon other substrates. Also disclosed is a fermentative process from producing the enzyme.
    Type: Grant
    Filed: January 9, 1986
    Date of Patent: May 19, 1987
    Assignee: Kyowa Hakko Kogyo Co., Inc.
    Inventors: Takayuki Uwajima, Kinya Fujishiro, Kenichiro Takayama
  • Process for manufacturing alcohol by fermentation
    Patent number: 4472501
    Abstract: Ethanol is produced by culturing the microorganism Kluyveromyces cellobiovorus or Kloeckera apiculata in a medium containing, as a carbon source, an assimilable source of xylose, cellobiose or both. The carbon source may be provided in the form of hydrolysates of cellulose containing substances such as cotton, wood, straw or paper which are obtained by acid hydrolysis or enzymatic action. At the completion of culturing, ethanol is removed from the culture in a conventional manner.
    Type: Grant
    Filed: August 10, 1982
    Date of Patent: September 18, 1984
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Seigo Takasawa, Yasushi Morikawa, Kenichiro Takayama, Izumi Masunaga
  • Processes for producing thermophilic aspartase
    Patent number: 4391910
    Abstract: Thermophilic aspartase is produced by culturing a microorganism belonging to the genus Bacillus. The enzyme is useful as a catalyst in the production of L-aspartic acid from ammonium fumarate or a mixture of fumaric acid and ammonia.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: July 5, 1983
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kazuo Kimura, Kenichiro Takayama, Yutaka Ado, Tamotsu Kawamoto, Izumi Masunaga
  • Citric acid producing mutant yeast strains
    Patent number: 4322498
    Abstract: Citric acid is selectively produced by fermentation of a mutant yeast strain which requires the presence of iron in the culture medium. Citric acid is accumulated in the culture medium and isolated therefrom.
    Type: Grant
    Filed: October 16, 1974
    Date of Patent: March 30, 1982
    Assignee: Kyowa Hakko Kogyo Co., Ltd.
    Inventors: Kenichiro Takayama, Tetsuo Adachi, Mamoru Kohata, Kiyoji Hattori, Tomoko Tomiyama