Patents by Inventor Toshio Nishizaki

Toshio Nishizaki 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).

  • Noise insulating material
    Patent number: 5064890
    Abstract: The noise insulating material comprises a binder resin, sound barrier filler, liquid rubber and fire-resistant fiber. The incorporation of fire-resistant fiber in the binder resin reinforces the resin matrix to prevent melting and shedding of the binder resin upon exposure to a flame. Being qualified as a quasi-incombustible material, this noise insulating material can be used in a broad range of applications.
    Type: Grant
    Filed: November 26, 1990
    Date of Patent: November 12, 1991
    Assignees: Tatsuta Electric Wire and Cable Co., Ltd., Nippon Mining Co., Ltd., Misawa Home Ltd.
    Inventors: Hidekazu Tsurumaru, Nobuhiro Fujio, Takeshi Yamasaki, Isao Negishi, Toshio Nishizaki, Takashi Suzuki
  • Filler for noise insulating material and noise insulating material using same
    Patent number: 4814018
    Abstract: Fillers comprising a composition in which 50-90 wt. % or iron oxides and 10-30 wt. % of silica are contained, at least 50 wt. % of the iron oxides being present in the form of iron oxide silicate, and the content of alkali metal oxides or alkaline earth metal oxides is 10 wt. % or less in total, are suitable as fillers for the fabrication of noise insulating materials. Noise insulating materials obtained by using said fillers are excellent in flexibility and processibility and moreover are large in surface density, thus exhibiting excellent noise insulating ability.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: March 21, 1989
    Assignees: Tatsuta Electric Wire and Cable Co., Ltd., Nippon Mining Co., Ltd.
    Inventors: Hidekazu Tsurumaru, Nobuhiro Fujio, Takeshi Yamasaki, Toshio Nishizaki, Isao Negisi