Patents by Inventor Fumio Shiroo

Fumio Shiroo 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).

  • Polyol composition for hard polyurethane foam and method for producing hard polyurethane foam
    Publication number: 20060235102
    Abstract: The present invention provides a polyol composition for hard polyurethane foam in which HFC-245fa is used as a blowing agent and its vapor pressure is suppressed, and a method for producing a hard polyurethane foam. The polyol composition for hard polyurethane foam comprises at least a polyol compound, a blowing agent, a foam stabilizer and a catalyst, which is mixed with an isocyanate component containing a polyisocyanate compound, followed by foaming and curing to form a hard polyurethane foam, and the blowing agent is 1,1,1,3,3-pentafluoropropane (HFC-245fa) and further comprises at least one compatibilizer selected from the group consisting of DMA, NMP, GBL and MPA, and 1,1,1,3,3-pentafluorobutane (HFC-365mfc) in a predetermined ratio.
    Type: Application
    Filed: June 9, 2004
    Publication date: October 19, 2006
    Inventors: Hiroyuki Anzai, Natsuko Anraku, Masahiro Jinno, Fumio Shiroo, Yasuo Hibino, Toshio Hesaka