Patents by Inventor Schigeru Fujita

Schigeru Fujita 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).

  • CROSSLINKABLE RUBBER COMPOSITION AND CROSS-LINKED RUBBER
    Publication number: 20120172509
    Abstract: A crosslinkable rubber composition comprising 0.2 to 10 parts by weight of an aromatic secondary amine-based anti-aging agent and 0.5 to 20 parts by weight of a polyamine-based crosslinking agent with respect to 100 parts by weight of a nitrile rubber including an ?,?-ethylenically unsaturated nitrile unit and an ?,?-ethylenically unsaturated dicarboxylic acid monoester unit, and with iodine value of 120 or less. The present invention can provide a crosslinkable rubber composition, providable of a cross-linked rubber excellent in a variety of properties such as mechanical strength and small in compression set, and a cross-linked rubber obtained by cross-linking the rubber composition.
    Type: Application
    Filed: March 5, 2012
    Publication date: July 5, 2012
    Inventors: Hiroyasu NAGAMORI, Schigeru Fujita, Kiyonori Umetsu, Akira Tsukada