Patents by Inventor Shiro Nakazawa

Shiro Nakazawa 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).

  • Wet friction material
    Patent number: 5127949
    Abstract: There is disclosed a wet friction material which comprises 5 to 40% by weight of a thermosetting resin as a binder component with the balance being a filler, wherein the filler includes at least a rubber and an exfoliated graphite.
    Type: Grant
    Filed: August 31, 1990
    Date of Patent: July 7, 1992
    Assignee: Toshiba Tungaloy Co., Ltd.
    Inventors: Shiro Nakazawa, Mikio Fujiwara