Patents by Inventor Masahisa Ikemi

Masahisa Ikemi 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).

  • Method for producing hyaluronic acid
    Patent number: 8927234
    Abstract: It is intended to provide a simple method for producing hyaluronic acid at a high yield. Further, it is also intended to provide a method for producing hyaluronic acid in a short period of time. The invention provides a method for producing hyaluronic acid including a step of culturing a microorganism having the capability to produce hyaluronic acid and a step of adding glutamine and arginine to a culture medium during late logarithmic growth phase of the microorganism.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: January 6, 2015
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masamichi Hashimoto, Teruaki Kakema, Kenji Fujii, Masahisa Ikemi
  • METHOD FOR PRODUCING HYALURONIC ACID
    Publication number: 20110207178
    Abstract: It is intended to provide a simple method for producing hyaluronic acid at a high yield. Further, it is also intended to provide a method for producing hyaluronic acid in a short period of time. The invention provides a method for producing hyaluronic acid including a step of culturing a microorganism having the capability to produce hyaluronic acid and a step of adding glutamine and arginine to a culture medium during late logarithmic growth phase of the microorganism.
    Type: Application
    Filed: July 25, 2008
    Publication date: August 25, 2011
    Inventors: Masamichi Hashimoto, Teruaki Kakema, Kenji Fujii, Masahisa Ikemi
  • Process for preparing L-threonine
    Patent number: 4492757
    Abstract: Disclosed is a process for preparing L-threonine which comprises causing D-threonine-aldolase, or D-threonine-aldolase and L-allothreonine-aldolase to act on a solution containing at least DL-threonine thereby obtaining L-threonine from a mixture containing at least DL-threonine.
    Type: Grant
    Filed: December 13, 1982
    Date of Patent: January 8, 1985
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masaaki Kato, Teruzo Miyoshi, Iwao Kibayashi, Masahisa Ikemi, Haruo Gomi, Yoshiaki Ishimatsu, Noriaki Koizumi, Hideaki Yamada
  • Production of a block copolymer containing hydrophilic and hydrophobic blocks
    Patent number: 4242474
    Abstract: A block copolymer expressed by the general formula: ##STR1## X.sub.1 is a group derived from the polymerization of .alpha.-substituted acrylic acid hydroxy ester, X.sub.2 is a polyoxyalkylene, R.sub.1 is a divalent hydrocarbon group, R.sub.2 is a hydrogen atom or methyl group, and R.sub.3 is a divalent hydrocarbon-based group.
    Type: Grant
    Filed: September 24, 1979
    Date of Patent: December 30, 1980
    Assignee: Terumo Corporation
    Inventors: Isao Shinohara, Teruo Okano, Masahisa Ikemi