Patents by Inventor Masami Ohba

Masami Ohba 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).

  • Hair treatment products
    Patent number: 4342744
    Abstract: A hair treatment product comprises a polyvinyl pyrrolidone quaternized polymer and a phosphate mono-, di- or tri-ester and optionally a polyvinyl-pyrrolidone-vinyl acetate copolymer.
    Type: Grant
    Filed: July 14, 1980
    Date of Patent: August 3, 1982
    Assignee: Lever Brothers Company
    Inventors: Masaaki Arai, Masami Ohba, Guy A. G. Ricketts, Jean A. Steer