Patents by Inventor Hitoshi Kawajiri

Hitoshi Kawajiri 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).

  • Organic substance processing system and organic substance processing apparatus
    Patent number: 6206658
    Abstract: Fluid containing organic substances, which has not processed yet, is fed to a plurality of cylinders, using a slurry pump. A free piston is included in each cylinder, the fluid which has not yet been processed is introduced into one of two chambers in the cylinder partitioned by the piston, and processed high-pressure fluid which has been processed is introduced into the other one of the two chamber in the cylinder. The piston pressurizes the fluid with which the cylinder has been filled up. A pressure holding valve is provided in a processed high-pressure fluid system to pressurize an organic substance processing system, and this pressure holding valve suppresses changes in the pressure in the processed high-pressure fluid system.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: March 27, 2001
    Assignees: Hitachi, Ltd., Hitachi Plant Engineering Co., Ltd.
    Inventors: Akira Nishioka, Hiroshi Kusumoto, Keiji Sasao, Hiroshige Kikuchi, Takao Sato, Ryuichi Kaji, Shinji Aso, Hitoshi Kawajiri, Satoshi Miyabayashi