Patents by Inventor Rokuro Aoki

Rokuro Aoki 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 a spinel type ceramic sintered body
    Patent number: 4751208
    Abstract: A spinel type ceramic sintered body is provided starting from a chromiferous slag which is a waste discharged from sodium chromate production, said sintered body being reproducable by selecting the mole ratios of R.sub.2 O/MgO to 0.9-2.0 and SiO.sub.2 /MgO to 1-6 wherein R represents collectively Al, Fe and Cr, the sintered body having high thermal conductivity falling within the range of 1.3-2.5 kcal/mh.degree. C., specific electric resistance falling within the range of 10.sup.2 -10.sup.7 cm high mechanical strengths and unique coloration and which can be used as a functional tile.
    Type: Grant
    Filed: July 1, 1986
    Date of Patent: June 14, 1988
    Assignee: Nippon Chemical Industrial Co., Inc.
    Inventors: Rokuro Aoki, Nobuo Takagi