Patents by Inventor Etsumi Kunishige

Etsumi Kunishige 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).

  • Microbiological process for the preparation of unsaturated dicarboxylic acids
    Patent number: 4474882
    Abstract: A process for the preparation of an unsaturated dicarboxylic acid which comprises cultivating under aerobic conditions a yeast belonging to Candida tropicalis which is capable of producing an unsaturated dicarboxylic acid from an unsaturated fatty acid or its ester, such as Candida tropicalis 104-04 strain, in a medium containing an unsaturated fatty acid having 14 to 22 carbon atoms or its ester, to produce an unsaturated dicarboxylic acid having 14 to 22 carbon atoms; or effecting oxidation of said fatty acid or its ester in the presence of microorganisms of said yeast produced in advance by cultivation in an assimilable carbon source to produce an unsaturated dicarboxylic acid having 14 to 22 carbon atoms; and then recovering the thus-produced unsaturated dicarboxylic acid.
    Type: Grant
    Filed: September 21, 1981
    Date of Patent: October 2, 1984
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Etsumi Kunishige, Tsuyoshi Morinaga