Patents by Inventor Yutaka Sumida

Yutaka Sumida 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 thermally cracking heavy petroleum oil
    Patent number: 4214979
    Abstract: Disclosed herein is a method of thermally cracking a heavy petroleum oil by introducing the heavy petroleum oil into a reactor and contacting the heavy petroleum oil thus introduced with a gas, which does not react with the heavy petroleum oil, at a temperature of 400.degree.-2000.degree. C. thereby thermally cracking the heavy petroleum oil. The method uses plural reactors and introduces the heavy petroleum oil into the reactors in a specified manner, and charges the reactor in advance with a specified amount of heavy petroleum oil of a specified temperature.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: July 29, 1980
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Chiyoda Chemical Engineering & Construction Co.
    Inventors: Hajime Nakanishi, Kiyoji Ozaki, Toshio Shinozuka, Masato Izumi, Takaaki Aiba, Hisatsugu Kaji, Yutaka Sumida, Takao Ishihara
  • Apparatus for the thermal cracking of heavy hydrocarbon
    Patent number: 4147753
    Abstract: In a process for the thermal cracking of a heavy hydrocarbon in a cylindrical reactor, a portion of the content material in the reactor is taken out and injected back into the reactor according to a specific procedure to form a "wet wall" or liquid curtain on the inner peripheral wall of the reactor, thereby preventing coking in the reactor. The apparatus includes a radially outwardly extending interior annular recess around an upper portion of the inner wall thereof and forming a part of said inner wall and plural means for tangentially injecting the recycled liquid into said recess.
    Type: Grant
    Filed: November 11, 1977
    Date of Patent: April 3, 1979
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Tomizo Endo, Yutaka Sumida, Toru Kawahara, Masaichi Ohtake, Shoichi Motokawa, Keiji Nagayama, Masatomo Shigeta, Hiroshi Hozuma, Masaharu Tomizawa, Hideo Kikuchi
  • Method for the thermal cracking of heavy hydrocarbon
    Patent number: 4085034
    Abstract: In a process for the thermal cracking of a heavy hydrocarbon in a cylindrical reactor, a portion of the content material in the reactor is taken out and injected back into the reactor according to a specific procedure to form a "wet wall" or liquid curtain on the inner peripheral wall of the reactor, thereby preventing coking in the reactor.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: April 18, 1978
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Tomizo Endo, Yutaka Sumida, Toru Kawahara, Masaichi Ohtake, Shoichi Motokawa, Keiji Nagayama, Masatomo Shigeta, Hiroshi Hozuma, Masaharu Tomizawa, Hideo Kikuchi