Patents by Inventor Nobuo Kamioka

Nobuo Kamioka 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).

  • Friction material containing BT resin dust
    Patent number: 5384344
    Abstract: A friction material containing dust having bismaleimidetriazine as a major ingredient. The dust is effective when contained in amount of 1 to 20 wt. % in the friction material. Compared with conventional friction material containing cashew dust, the generation rate of noise is reduced drastically, while the frictional performance is equivalent or higher.
    Type: Grant
    Filed: September 13, 1993
    Date of Patent: January 24, 1995
    Assignees: Akebono Brake Industry Co., Ltd., Akebond Research and Development Centre Ltd.
    Inventors: Nobuo Kamioka, Hiroshi Tokumura, Toru Yoshino
  • Process for the production of friction materials
    Patent number: 5279777
    Abstract: A process for producing a friction material under low-temperature conditions using, as a reinforcement, one or more fibers selected from a metal fiber, an organic fiber and an inorganic fiber and, as a binder, a compounded pitch that consists of a mesophase pitch and sulfur and/or an aromatic nitro compound. The content of an optically anisotropic phase in the mesophase pitch is at least 80% and the softening point of the mesophase pitch is not higher than 270.degree. C. The friction material produced exhibits consistent friction characteristics over a broad temperature range.
    Type: Grant
    Filed: October 28, 1992
    Date of Patent: January 18, 1994
    Assignees: Mitsubishi Gas Chemical Co., Inc., Akebono Research and Development Centre, Ltd.
    Inventors: Takashi Kojima, Hitoshi Sakamoto, Nobuo Kamioka, Hiroshi Tokumura
  • Method of making carbon/carbon composite
    Patent number: 5147588
    Abstract: A hybrid carbon/carbon composite and a method of manufacturing a hybrid carbon/carbon composite, wherein a raw material containing carbon fibers with two or more different lengths and meso-phase carbon as a binder are raw materials. The raw materials are kneaded in the presence of adhesives, dried and defibrated, then molded under heat and pressure by hot press, and thereafter subjected to heat treatment.
    Type: Grant
    Filed: June 12, 1990
    Date of Patent: September 15, 1992
    Assignees: Akebono Brake Industry Co., Ltd., Akebono Research and Development Centre Ltd.
    Inventors: Akimitsu Okura, Toushoku Chou, Nobuo Kamioka
  • Frictional material
    Patent number: 4747873
    Abstract: A frictional material is disclosed, which is characterized in that, with the metal-containing composite material infiltrated with metal into the pore portions of composite comprising carbon material reinforced with carbon fibers, the porosity of said composite is adjusted to 5 to 15 vol. % and a metal or an alloy with a melting point of 125.degree. to 1100.degree. C. is infiltrated in amounts of 3 to 10 vol. %.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: May 31, 1988
    Assignees: Akebono Brake Industry Co., Ltd., Akebono Research & Development Centre Ltd.
    Inventor: Nobuo Kamioka
  • Sintered alloy for friction materials
    Patent number: 4350530
    Abstract: Fe-base sintered alloy friction materials containing 3 to 15% of bismuth of Bi-Pb alloy containing 5 to 100% bismuth, which provide very stable friction coefficient over a wide range from low temperature zones to high temperature zones, and very excellent wear resistance.
    Type: Grant
    Filed: April 1, 1980
    Date of Patent: September 21, 1982
    Assignee: Akebono Brake Industry Co., Ltd.
    Inventor: Nobuo Kamioka