Patents by Inventor Jousuke Sato

Jousuke Sato 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 continuous production of pitch
    Patent number: 4080283
    Abstract: Pitch is produced continuously by heat treating a heavy hydrocarbon oil at a temperature of 350.degree. to 500.degree. C successively in two or more reactors connected in series, outlet to inlet, recirculating, at the same time, one portion of the liquid output substance from at least one reactor into that reactor, and introducing the output substance (molten pitch) of the final reactor into an after-treatment chamber of duct shape with an inactive atmosphere sealed therewithin thereby to cool the output substance.
    Type: Grant
    Filed: April 28, 1977
    Date of Patent: March 21, 1978
    Assignee: Koa Oil Company, Ltd.
    Inventors: Kosaku Noguchi, Kiyoharu Yoshimura, Honami Tanaki, Reijiro Nishiyama, Akio Mimura, Jousuke Sato, Kiyohiko Koizumi