Patents by Inventor Kyouji Tominaga

Kyouji Tominaga 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).

  • Material for mold and process of forming mold by using this material
    Patent number: 5177140
    Abstract: A material for a mold which comprises, as main components, a refractory aggregate and a hardenable binder comprising a polyfunctional acrylamide having at least two ethylenically unsaturated groups in the molecule, has an excellent low-temperature rapid hardenability, disintegrability, and pot life and is especially suitable as a material for a mold for casting a low-melting-point metal such as an aluminum alloy.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: January 5, 1993
    Assignee: Asahi Yukizai Kogyo Co. Ltd.
    Inventors: Fumiyuki Ogawa, Kyouji Tominaga, Yoshiomi Ota, Isao Kai, Kazuo Tamemoto, Mitsuhiro Osada