Patents by Inventor HIROTAKA RYUUTOU

HIROTAKA RYUUTOU 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).

  • Publication number: 20020123644
    Abstract: 3-isocyanate methyl-1,6-hexamethylene diisocyanate which is useful for the production of polyurethane resins such as polyurethane polyisocyanate; a process for producing 3-isocyanate methyl-1,6-hexamethylene diisocyanate which process comprises reacting 3-aminomethyl-1,6-hexamethylene diamine with phosgene in the presence of a tertiary amine; and a paint or an adhesive containing the polyurethane resin produced using the above isocyanate compound.
    Type: Application
    Filed: October 12, 1999
    Publication date: September 5, 2002
    Inventors: MITSUMASA KITAI, HIROTAKA RYUUTOU, TOSHIHIKO YAHATA, YOSHINORI HARA, HIROSHI IWANE, YUUJI SOEJIMA