Patents by Inventor Fumio Miyatake

Fumio Miyatake 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).

  • Preoxidized fiber and process for producing the same
    Patent number: 4536448
    Abstract: A preoxidized fiber suitable for producing carbon fiber, comprising preoxidizing an acrylic fiber having thereon an ammonium salt of a fatty ester represented by formula [A] and [B] ##STR1## wherein R.sub.1 is an aliphatic hydrocarbon group having from 11 to 17 carbon atoms; R.sub.2 and R.sub.3 can each be hydrogen, a lower alkyl group, a hydroxyethyl group, or an hydroxyisopropyl group; and X.crclbar. is an anion.The preoxidized fiber produced from the acrylic fiber has very little coalescence, and therefore high-strength carbon fiber can be obtained from this preoxidized fiber.
    Type: Grant
    Filed: September 8, 1983
    Date of Patent: August 20, 1985
    Inventors: Hiroyasu Ogawa, Tetsuro Shigei, Hayashi Takahashi, Tetuya Okabe, Fumio Miyatake
  • Brake lining material
    Patent number: 4259397
    Abstract: A brake pad or lining comprising a binder and a peroxidized fiber derived from an acrylic fiber said peroxidized fiber containing at least about 5 wt % bonded oxygen. The material has a relatively high coefficient of friction as well as good wear resistance and fade resistance and can be used in place of a conventional asbestos brake pad or lining.
    Type: Grant
    Filed: July 9, 1979
    Date of Patent: March 31, 1981
    Assignees: Toho Beslon Co., Ltd., Nisshin Spinning Co., Ltd.
    Inventors: Kazuhisa Saito, Fumio Miyatake, Kunio Shibata