Patents by Inventor Tamotsu Akasaka

Tamotsu Akasaka 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 hardened inorganic products
    Patent number: 4673543
    Abstract: A method of producing hardened inorganic products is characterized in that a hydraulic material comprising slag as an effective component is mixed with gypsum and water, and mixture is then shaped and aged at an internal temperature of 50.degree. to 100.degree. C. to produce TSH therein and to cause hydration and hardening. The resulting hardened inorganic product features a light weight and improved fire resistance, freezing resistance, dimensional stability and strength.
    Type: Grant
    Filed: February 5, 1986
    Date of Patent: June 16, 1987
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Tamotsu Akasaka, Shinichi Tomiuchi, Kazuo Seto, Kenichi Matsui, Yasushi Sawada