Patents by Inventor Masao Hasunuma

Masao Hasunuma 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).

  • Process for modifying rheological and suspension properties of nonaqueous suspension
    Patent number: 3937678
    Abstract: A process for improving rheological properties and suspension properties of a nonaqueous fluid system containing finely divided solid particles, characterized in that an amide wax (I) having a melting point of about 100.degree. to about 160.degree.C. obtained from reaction of hydrogenated castor oil fatty acid or an organic acid mixture containing at least 30 molar per cent of hydrogenated castor oil fatty acid with amines and an emulsifiable polyethylene wax (II) having an acid number of about 2 to 50, a softening point of about 95.degree. to about 120.degree.C., a density of about 0.92 to about 0.98 and a penetration of about 1 to about 20 are added to the nonaqueous fluid system, and the nonaqueous fluid system obtained by aforesaid process.
    Type: Grant
    Filed: July 5, 1974
    Date of Patent: February 10, 1976
    Assignee: Kusumoto Chemicals Ltd.
    Inventors: Zenpachi Yasuda, Hiroshi Koizumi, Masao Hasunuma, Satoshi Oda