Patents by Inventor Tooru Matumura

Tooru Matumura 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).

  • Polyolefin composition
    Patent number: 5015679
    Abstract: Polyolefin material having improved resistance to heat and discoloration comprising amount of a stabilizing composition said stabilizing composition comprising a relatively high molecular weight hindered amine compound and an organic phosphorus compound having relatively low hygroscopicity and a hydrotalcite.
    Type: Grant
    Filed: June 1, 1989
    Date of Patent: May 14, 1991
    Assignee: Tonen Sekiyukagagaku K.K.
    Inventor: Tooru Matumura