Patents by Inventor Tadanori Yamamura

Tadanori Yamamura 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).

  • Phytase having a low Michaelis constant for phytic acid from monascus
    Patent number: 6372247
    Abstract: Provided is an isolated phytase derived from a microorganism. The microorganism is preferably from the genus Monascus. The phytase has a Michaelis constant of 10 to 110 &mgr;M when phytic acid is used as a substrate. A process for producing the phytase is also provided as is an animal feed comprising the phytase. The phytase is preferably isolated from Monascus anka IFO 30873. The phytase has a Km of 107 &mgr;m when phytic acid is used as a substrate, the optimum pH is 2.5, the optimum temperature is 45° C., the molecular weight of the phytase is 140 kDa when measured by gel filtration, and the isolectric point is 5.2 using chromatofocusing.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: April 16, 2002
    Assignees: Kyowa Kakko Kogy Co., Ltd., Shin Nihon Chemical Co., Ltd.
    Inventors: Tadashi Nagashima, Satoshi Kuroyanagi, Tadanori Yamamura, Hideharu Anazawa, Yoko Kato, Seiji Sugimoto, Keiichi Yano
  • Phytase having a low michaelis constant for phytic acid from monascus
    Publication number: 20020037571
    Abstract: The present invention provides phytases having low Km values for phytic acid, a process for producing the phytases by using a microorganism having the ability to produce and accumulate the phytases and feed containing the phytases.
    Type: Application
    Filed: June 22, 2001
    Publication date: March 28, 2002
    Inventors: Tadashi Nagashima, Satoshi Kuroyanagi, Tadanori Yamamura, Hideharu Anazawa, Yoko Kato, Seiji Sugimoto, Keiichi Yano
  • Phytase having a low michaelis constant for phytic acid from monascus
    Patent number: 6337085
    Abstract: The phytase is preferably isolated from Monascus anka IFO 30873. The phytase has a Km of 20 &mgr;m when phytic acid is used as a substrate, the optimum pH is 6.0, the optimum temperature is 50° C., the molecular weight of the phytase is 120 kDa when measured by gel filtration, and the isolectric point is 4.8 using chromatofocusing.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: January 8, 2002
    Assignees: Kyowa Hakko Kogyo Co., Ltd., Shin Nihon Chemical Co., Ltd.
    Inventors: Tadashi Nagashima, Satoshi Kuroyanagi, Tadanori Yamamura, Hideharu Anazawa, Yoko Kato, Seiji Sugimoto, Keiichi Yano
  • Phytase having a low michaelis constant for phytic acid from monascus
    Patent number: 6261592
    Abstract: Provided is an isolated phytase derived from a microorganism. The microorganism is preferably from the genus Monascus. The phytase has a Michaelis constant of 10 to 110 &mgr;M when phytic acid is used as a substrate. A process for producing the phytase also is provided, as is an animal feed comprising the phytase.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: July 17, 2001
    Assignees: Kyowa Hakko Kogyo Co., LTD, Shin Nihon Chemical Co., LTD
    Inventors: Tadashi Nagashima, Satoshi Kuroyanagi, Tadanori Yamamura, Hideharu Anazawa, Yoko Kato, Seiji Sugimoto, Keiichi Yano