Patents by Inventor Hiroshi Ibuki

Hiroshi Ibuki 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 3'-phosphoadenosine 5'-phosphosulfate
    Patent number: 5376535
    Abstract: A method for producing 3'-phosphoadenosine 5'-phosphosulfate, which comprises (1) reacting adenosine 5'-triphosphate with a sulfate donor in the presence of heat-stable adenosine 5'-triphosphate sulfurylase to produce adenosine 5'-phosphosulfate, and (2) reacting said adenosine 5'-phosphosulfate with adenosine 5'-triphosphate in the presence of heat-stable adenosine 5'-phosphosulfate kinase; and another method for producing 3'-phosphoadenosine 5'-phosphosulfate which comprises (1) reacting adenosine 5'-triphosphate with a sulfate donor in the presence of adenosine 5'-triphosphate sulfurylase to produce adenosine 5'-phosphosulfate, (2) reacting said adenosine 5'-phosphosulfate with adenosine 5'-triphosphate in the presence of adenosine 5'-phosphosulfate kinase to produce 3'-phosphoadenosine 5'-phosphosulfate and adenosine 5'-diphosphate, and (3) converting said adenosine 5'-diphosphate into adenosine 5'-triphosphate in the presence of a phosphate donor and an enzyme capable of converting adenosine 5'-diphospha
    Type: Grant
    Filed: November 10, 1992
    Date of Patent: December 27, 1994
    Assignee: Unitika Ltd.
    Inventors: Masaaki Onda, Hiroshi Ibuki, Hiroshi Nakajima