Patents by Inventor Tadaaki Orihashi

Tadaaki Orihashi 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 thermal cracking of residual oils
    Patent number: 4673486
    Abstract: An extraction residue obtained by solvent deasphalting of a residual oil is mixed with a carrier gas and thermally cracked at a temperature of 400.degree. C. to 600.degree. C. in a tube-type cracking apparatus to obtain cracked oil and pitch. The use of the carrier gas, which may be either an inert gas such as nitrogen or a reactive gas such as hydrogen, permits a flow velocity through the cracking apparatus sufficient to substantially prevent coking. Preferably, the cracking conditions are controlled so that the yield of cracked oil is not more than about 30 to 35%.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: June 16, 1987
    Assignee: Jushitsuyu Taisaku Gijutsu Kenkyu Kumiai
    Inventors: Tadaaki Orihashi, Hiroshi Tsuji, Kazuhiko Ogawa, Masao Hayashitani, Seiji Terada, Tsugio Miyagawa, Hideo Isozaki