Patents by Inventor Shyogo Itoh

Shyogo Itoh 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).

  • Composition for polyurethane resin formation, sealing material, and hollow-fiber membrane module
    Patent number: 8158741
    Abstract: A polyurethane resin forming composition comprising: a main agent (A) containing an isocyanate group-terminated prepolymer obtained by reacting an isocyanate group-containing compound (a1) with a polyfunctional polyether polyol (b1) having a specific molecular weight distribution obtained by the use of a compound having a functional group number of 8 as an initiator; and a curing agent (B) containing a castor oil-modified polyol (b2) obtained from castor oil and/or a castor oil fatty acid and a trimethylolalkane. This polyurethane resin forming composition is applicable to the production of large-sized hollow-fiber membrane modules and can form cured resins excellent in adhesion property and heat resistance, low in the temperature dependence of hardness and extremely small in the amount of substance eluted into water when immersed in the water.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: April 17, 2012
    Assignee: Nippon Polyurethane Industry Co., Ltd.
    Inventors: Kouji Yamato, Shyogo Itoh, Keiko Yoshida
  • COMPOSITION FOR POLYURETHANE RESIN FORMATION, SEALING MATERIAL, AND HOLLOW-FIBER MEMBRANE MODULE
    Publication number: 20100170843
    Abstract: A polyurethane resin forming composition comprising: a main agent (A) containing an isocyanate group-terminated prepolymer obtained by reacting an isocyanate group-containing compound (a1) with a polyfunctional polyether polyol (b1) having a specific molecular weight distribution obtained by the use of a compound having a functional group number of 8 as an initiator; and a curing agent (B) containing a castor oil-modified polyol (b2) obtained from castor oil and/or a castor oil fatty acid and a trimethylolalkane. This polyurethane resin forming composition is applicable to the production of large-sized hollow-fiber membrane modules and can form cured resins excellent in adhesion property and heat resistance, low in the temperature dependence of hardness and extremely small in the amount of substance eluted into water when immersed in the water.
    Type: Application
    Filed: November 22, 2006
    Publication date: July 8, 2010
    Applicant: NIPPON POLYURETHANE INDUSTRY CO., LTD.
    Inventors: Kouji Yamato, Shyogo Itoh, Keiko Yoshida