Patents by Inventor Nobuaki Tsukida

Nobuaki Tsukida 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).

  • Method for producing foamed synthetic resin
    Patent number: 6043291
    Abstract: A method for producing a foamed synthetic resin which comprises reacting a polyisocyanate compound with an active hydrogen compound having at least 2 active hydrogen-containing functional groups reactive with an isocyanate group in the presence of a foaming agent, wherein the foaming agent comprises at least two kinds of 1,1,1,3,3-pentafluoropropane and 1,1,1,2-tetrafluoroethane.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: March 28, 2000
    Assignee: Asahi Glass Company Ltd.
    Inventors: Hiromitsu Takeyasu, Minako Okamura, Nobuaki Tsukida, Hisashi Sato