Patents by Inventor Takasi Shirazawa

Takasi Shirazawa 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).

  • Method of manufacturing readily machinable high strength glass ceramics
    Patent number: 5061308
    Abstract: A method of manufacturing readily machinable high strength glass ceramics includes the steps of: preparing a powder mixture by mixing glass powders 1 and 2, each having a predetermined composition, with each other; and producing a calcined product by granulating, molding, and heating the powder mixture. This method makes it possible to obtain readily machinable high strength glass ceramics of a novel composition, which exhibit a heat resistance of not less than 1000.degree. C., which excel in mechanical strength and electrical insulation performance, and which allow precision machined parts and large-sized products to be produced with ease.
    Type: Grant
    Filed: February 6, 1991
    Date of Patent: October 29, 1991
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tadaki Murakami, Takasi Shirazawa