Patents by Inventor Minoru Akimoto

Minoru Akimoto 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).

  • Decoking apparatus
    Patent number: 4196050
    Abstract: A decoking device suitable for use on a reaction vessel for the thermal cracking of heavy petroleum oils, including an assembly mounted on top of the reaction vessel and having a cylinder and a piston slidably and rotatably received in the cylinder, the cylinder and piston defining a scrubbing liquid chamber which is sealed from the outside. A scrubbing liquid is fed through the scrubbing liquid chamber to a main injection pipe to inject the liquid through a multitude of jet nozzles in the main injection pipe against the inner wall surfaces of the reaction vessel, the main injection pipe being connected to the piston for movement therewith.
    Type: Grant
    Filed: February 3, 1978
    Date of Patent: April 1, 1980
    Assignees: Kureha Kagaku Kogyo Kabushiki Kaisha, Chiyoda Chemical Engineering & Construction Co., Ltd.
    Inventors: Hisao Takahashi, Takeshi Nomura, Yoshitomo Ohara, Hajime Nakanishi, Naotaka Miwa, Naoshi Kawabe, Tomizo Endo, Hiroshi Hozuma, Minoru Akimoto
  • Rotary pump for hot pitch, asphalt and like viscous solidifiable material
    Patent number: 4060353
    Abstract: A rotary pump for hot pitch, asphalt and like viscous solidifiable material, having a cylindrical outer extension on a packing gland to provide an elongated passage around a driving shaft, thereby allowing leaking material to solidify and be reduced into powder before falling from the outer end of the packing gland.
    Type: Grant
    Filed: October 4, 1976
    Date of Patent: November 29, 1977
    Inventors: Minoru Akimoto, Masaharu Tomizawa