Patents by Inventor Atsushi Oomura

Atsushi Oomura 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).

  • Rubber-coated gasket material
    Patent number: 5004650
    Abstract: A rubber-coated gasket material has a rubber layer formed on one or both sides of a metal sheet. The rubber layer has incorporated therein a nitrile rubber containing a carboxyl group in such an amount that the proportion of a carboxylic monomer as calculated in term as of a monomer content in the rubber component is in the range of 2-15 wt. %. The rubber layer is formed in a thickness of 10-300 .mu.m per side, and bonded to a metal sheet with a primer layer based on a phenolic resin being interposed between the rubber layer and the metal sheet.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: April 2, 1991
    Assignee: Nichias Corporation
    Inventors: Masaaki Ashizawa, Kazuo Nishimoto, Atsushi Oomura, Shuji Ito