Patents by Inventor Toshihiro Takao

Toshihiro Takao 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).

  • Surface-coated article and a method for the preparation thereof
    Patent number: 4906524
    Abstract: A metal shaped article, of which aesthetic value is of importance, such as watch cases, is provided with a coating layer of a ceramic composition containing a limited amount of magnesium oxide as an essential ingredient, the balance being silicon dioxide, aluminum oxide, titanium dioxide and the like, and having a limited thickness. The ceramic-based coating layer can be deposited on the substrate surface by a dry process such as ion plating. The substrate article can be provided with excellent protection against abrasion and corrosion by the ceramic-based coating layer without affecting the beautiful appearance of the substrate surface only when the ceramic composition contains the specified amount of magnesium oxide and the ceramic-based coating layer has a specified thickness.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: March 6, 1990
    Assignee: Orient Watch Co., Ltd.
    Inventor: Toshihiro Takao
  • Diaphragm pump
    Patent number: D454885
    Type: Grant
    Filed: December 15, 2000
    Date of Patent: March 26, 2002
    Assignee: Techno Takatsuki Co., Ltd.
    Inventors: Yasuhiro Murayama, Toshihiro Takao
  • Air directional control valve
    Patent number: D499113
    Type: Grant
    Filed: June 12, 2002
    Date of Patent: November 30, 2004
    Assignee: Techno Takatsuki Co. Ltd
    Inventors: Yasuhiro Murayama, Toshihiro Takao