Patents by Inventor Hiroshi Takamisawa

Hiroshi Takamisawa 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 preservation of aqueous glucose isomerase solution
    Patent number: 4106993
    Abstract: A method for preservation of an aqueous glucose isomerase solution is disclosed in which an aqueous glucose isomerase solution is mixed with a an alkaline material to adjust its pH value within a range of from 9 to 12 whereby the aqueous solution can be stored at room temperature for a period not less than three days without microbial contamination, putrefaction, denaturation and deactivation of the glucose isomerase.
    Type: Grant
    Filed: March 15, 1977
    Date of Patent: August 15, 1978
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Tetsuya Hirota, Tadashi Hishida, Akira Kamata, Isao Nakazawa, Hiroshi Takamisawa
  • Process for the isomerization of glucose into fructose
    Patent number: 4008124
    Abstract: There is disclosed a process for isomerization of glucose into fructose which comprises contacting an aqueous glucose solution with glucose isomerase in the presence of iron ion and magnesium ion, said glucose isomerase being in the form of insolubilized glucose isomerase adsorbed on a carrier.
    Type: Grant
    Filed: June 20, 1975
    Date of Patent: February 15, 1977
    Assignees: Mitsubishi Chemical Industries Ltd., Seikagaku Kogyo Co., Ltd.
    Inventors: Yoshimasa Fujita, Akiyoshi Matsumoto, Hachiro Ishikawa, Tadashi Hishida, Hideo Kato, Hiroshi Takamisawa