Patents by Inventor Hisashi Yamagata

Hisashi Yamagata 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 NADH oxidase
    Patent number: 5416012
    Abstract: A process for producing an NADH oxidase which comprises culturing alkalophilic, facultative anaerobic NADH oxidase-producing bacteria having the optimum growth pH in an alkaline region in medium and collecting said NADH oxidase from the culture; and a plasmid used for the said process.
    Type: Grant
    Filed: May 12, 1994
    Date of Patent: May 16, 1995
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Youichi Niimura, Michio Kozaki, Hisashi Yamagata, Miki Ikuta, Yasurou Kurusu, Hideaki Yukawa, Makiko Kukushima, Masato Terasausa
  • Process for producing NADH oxidase
    Patent number: 5336608
    Abstract: A process for producing an NADH oxidase which comprises culturing alkalophilic, facultative anaerobic NADH oxidase-producing bacteria having the optimum growth pH in an alkaline region in medium and collecting said NADH oxidase from the culture; and a plasmid used for the said process.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: August 9, 1994
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Youichi Niimura, Michio Kozaki, Hisashi Yamagata, Hideaki Yukawa
  • Cultivation of transformed microorganisms
    Patent number: 5279951
    Abstract: A process for cultivating a microorganism transformed with a recombinant plasmid at least containing (a) a DNA fragment containing a promoter and a regulator gene tnaC located downstream of the promoter in a tryptophanase operon (tna), and (b) a DNA fragment containing a desired structural gene which can be expressed by the promoter, which comprises cultivating the transformed microorganism in a culture medium while adding glucose as a carbon source continuously or intermittently so that the concentration of glucose is maintained within the range of 0.01 to 0.3%, and thereby allowing the desired structural gene to be expressed in the microorganism.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: January 18, 1994
    Assignee: Research Association for Utilization of Light Oil
    Inventors: Masato Terasawa, Hisashi Yamagata, Hideaki Yukawa, Yasurou Kurusu, Makiko Fukushima
  • Process for culturing microorganisms of the genus Pseudomonas and process for producing L-Alanine using said microorganisms
    Patent number: 5149651
    Abstract: Microorganisms of the genus Pseudomonas containing aspartate beta-decarboxylase at a high level are produced by culturing said microorganism in a medium supplemented with a chelating agent. L-Alanine can be efficiently produced from L-aspartic acid said microorganisms or the treated product thereof.
    Type: Grant
    Filed: April 26, 1991
    Date of Patent: September 22, 1992
    Assignee: Mitsubishi Petrochemical. Co., Ltd.
    Inventors: Makoto Goto, Terukazu Nara, Yasukazu Uchida, Masato Terasawa, Hideaki Yukawa, Hisashi Yamagata
  • Method of preparing L-malic acid
    Patent number: 4912043
    Abstract: An aqueous solution containing fumaric acid is reacted in the presence of an aerobically cultured product of a microorganism belonging to the Brevibacterium genus and having resistance to .alpha.-aminobutyric acid, whereby L-malic acid is produced.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: March 27, 1990
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Masato Terasawa, Terukazu Nara, Hideaki Yukawa, Hisashi Yamagata, Yukie Satoo