Patents by Inventor Masahiro Ashizawa

Masahiro Ashizawa 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).

  • Water/oil repellent composition
    Patent number: 6491745
    Abstract: The object is to provide a water/oil repellent composition which can simultaneously perform a water/oil treatment and a polishing treatment to leather products such as leather shoes, etc., by using one water/oil repellent composition, and can also exert excellent water/oil repellent effect and excellent polishing effect. It is constituted so that microcapsules, in which a polishing agent is encapsulated, are dispersed in a water/oil repellent agent.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: December 10, 2002
    Assignee: 3M Innovative Properties Company
    Inventor: Masahiro Ashizawa
  • Fluorine system water- and oil-repellent agent
    Patent number: 5475070
    Abstract: To provide a water- and oil-repellent agent which, when it is used to treat natural fibers such as cotton and silk, does not damage the feeling of the fibers and does shown an excellent continuation property of water- and oil-repellency effect.A fluorine system water- and oil-repellent agent comprising, as a main component, units derived from a copolymer comprising polyfluoro-oxyalkyl-containing (meth)acrylate and units derived from a dicarboxylic acid anhydride-containing (meth)acrylate.
    Type: Grant
    Filed: October 27, 1994
    Date of Patent: December 12, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Masahiro Ashizawa, Kengo Imamura, Atsushi Udagawa, Makoto Nagase
  • Solvent-based water- and oil-repellent treating agent
    Patent number: 5308511
    Abstract: Compositions for imparting water- and oil-repellency to fabrics are provided. They contain a mineral spirits solution of a fluorchemical water- and oil-repellent agent, zirconium carboxylic acid ester, and alkenyl succinic anhydride.
    Type: Grant
    Filed: December 4, 1992
    Date of Patent: May 3, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Dirk Coppens, Makoto Nagase, Masahiro Ashizawa
  • Lint roller cover
    Patent number: D682555
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: May 21, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Philipp H. Refior, Masahiro Ashizawa
  • Lint roller cover
    Patent number: D683545
    Type: Grant
    Filed: September 27, 2012
    Date of Patent: June 4, 2013
    Assignee: 3M Innovative Properties Company
    Inventors: Philipp H. Refior, Masahiro Ashizawa