Patents by Inventor Hiroji Sakemi

Hiroji Sakemi 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).

  • Fired ceramic having dense and low thermal expansion characteristics
    Patent number: 4194917
    Abstract: A fired ceramic having dense and low thermal expansion characteristics comprises 0.3 to 8 wt. % of at least one of rare earth oxides and has a thermal expansion coefficient of less than 0.3% and a porosity of less than 10%.The fired ceramic having dense and low thermal expansion characteristics comprises a main component of cordierite, lithium aluminosilicates or aluminum titanate.The rare earth oxide is preferably Y.sub.2 O.sub.3 and can be CeO.sub.2 or La.sub.2 O.sub.3.
    Type: Grant
    Filed: June 7, 1978
    Date of Patent: March 25, 1980
    Assignee: Asahi Glass Company, Ltd.
    Inventors: Hiroji Sakemi, Tomohiro Morishita, Hideji Numata, Takuro Ono