Patents by Inventor Takeo Isono

Takeo Isono 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 producing soft porcelain
    Patent number: 4134772
    Abstract: A method of producing soft porcelain wherein one raw material of the porcelain, .beta.-calcium pyrophosphate, is obtained by heating uniformly bone phosphate, which is a by-product of gelatin production from cattle bones, at a temperature of 1,000.degree. to 1,250.degree. C so as to completely convert it to .beta.-calcium pyrosphosphate, and a green body consisting of the thus obtained .beta.-calcium pyrophosphate, limestone, sericite, kaolin, feldspar and quartz is prepared and then is subjected to oxidation firing.
    Type: Grant
    Filed: September 15, 1977
    Date of Patent: January 16, 1979
    Assignee: Narumi Seito Kabushiki Kaisha
    Inventors: Tadatoshi Ichiko, Takeo Isono, Keiichi Mochizuki