Patents by Inventor Howard S. Okubo

Howard S. Okubo 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).

  • Asbestos-free friction materials
    Patent number: 4477605
    Abstract: A pad-type friction material containing an inorganic fibrous material, a binder, zinc oxide and molybdenum sulfide. It contains no asbestos. The preferred fibrous material is wollastonite or a mixture of wollastonite and glass.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: October 16, 1984
    Assignee: Borg-Warner Corporation
    Inventors: Howard S. Okubo, Clarence E. Albertson, Roger K. Nibert
  • Asbestos-free friction materials
    Patent number: 4446203
    Abstract: An asbestos-free friction material characterized by good friction and wear properties. It comprises the combination of a binder resin, copper oxide, antimony sulfide and an aromatic polyamide resin. Barytes is also a valuable additive in the combination.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: May 1, 1984
    Assignee: Borg-Warner Corporation
    Inventors: Howard S. Okubo, Clarence E. Albertson, Roger K. Nibert