Patents by Inventor Haruo Yoshika

Haruo Yoshika 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).

  • Process for producing synthetic caking coal and binder pitch
    Patent number: 4061472
    Abstract: A raw synthetic caking coal having a volatile matter content of 20 - 70%, H/C (atomic ratio) of 0.60 - 1.20 and a maximum fluidity of greater than 40 ddpm is produced by coking heavy hydrocarbons. Synthetic caking coal having a volatile matter content of 20 - 40%, H/C (atomic ratio) of 0.60 - 0.75, a maximum fluidity of greater than 40 ddpm and a Free-Swelling-Index of greater than 3 is produced from the raw synthetic caking coal by stripping said raw synthetic caking coal with steam or light hydrocarbons.
    Type: Grant
    Filed: July 25, 1975
    Date of Patent: December 6, 1977
    Assignee: Nippon Mining Co., Ltd.
    Inventors: Hiromi Ozaki, Mamoru Yamane, Hachio Kodama, Haruo Yoshika