Patents by Inventor Atsuo Sasama

Atsuo Sasama 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).

  • Cellular thermoplastic resins with mixed blowing agents
    Patent number: 4264469
    Abstract: Thermoplastic resin foams such as polyethylene foams having excellent appearance can be produced with high foaming stability by using a blowing agent composition comprising (a) azodicarbonamide, (b) dinitrosopentamethylenetetramine, and (c) a phenolic or propionate compound such as 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl)-s-triazine-2-4-6-(1H, 3H, 5H)trion.
    Type: Grant
    Filed: July 23, 1979
    Date of Patent: April 28, 1981
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Yutaka Yamaguchi, Atsuo Sasama