Patents by Inventor Etsuko Yanase

Etsuko Yanase 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).

  • Patent number: 5912298
    Abstract: Compositions for floor polish. Specifically, a composition for floor polish made by the two-step process including the steps of (1) providing water-borne polyurethane resin, preferably having 2-20 acid functional groups per urethane and having an acid value of 15-200 and a molecular weight of 10,000 to 1,000,000, and (2) reacting the polyurethane resin with a calcium compound, not complexed with amines or ammonia, in an amount sufficient to form 0.05 to 0.9 chemical equivalents of calcium crosslinkages relative to the acid functional groups of the polyurethane resin. The invention also includes a floor polish made by a three-step process including the steps of (1) providing an emulsion of a water-borne polyurethane resin as described above, (2) adjusting the pH of the emulsion to a pH value within the range of 4.5 to 9 by adding a base to the emulsion, and (3) reacting the water-borne polyurethane resin with a calcium compound as described above.
    Type: Grant
    Filed: August 22, 1995
    Date of Patent: June 15, 1999
    Assignee: Yuho Chemicals, Inc.
    Inventors: Tadashi Gomi, Kazunori Nakahara, Etsuko Yanase, Ken-ichi Nakamura