Patents by Inventor Yasuo Osuga

Yasuo Osuga 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 production of a water-in-oil polymer emulsion having an excellent fluidity using an acrylic monomer containing quarternary ammonium salt
    Patent number: 4152307
    Abstract: A water-in-oil polymer emulsion having an excellent fluidity can be obtained by a process which comprises dispersing an aqueous solution of at least one (meth)acrylic monomer containing a quaternary ammonium salt or a tertiary amine salt in a hydrophobic organic liquid in the presence of an oil-in-water type nonionic surfactant, and heating the resulting dispersion to a temperature of at least 40.degree. C. to polymerize the monomer mixture.
    Type: Grant
    Filed: December 22, 1977
    Date of Patent: May 1, 1979
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Yasuo Shibahara, Masashi Okada, Kimihiko Noda, Yasuo Osuga