Patents by Inventor Harukazu Yamaguchi

Harukazu Yamaguchi 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).

  • Patent number: 5062926
    Abstract: The solvent recovery apparatus includes an adsorption tower having a gas adsorption element; a gas supply pipe for supplying a solvent-containing gas to the adsorption tower; a steam supply pipe for supplying steam to the adsorption tower; and a solvent recovery pipe for recovering a removed solvent. Disposed at the solvent recovery pipe are a condenser and a specific-gravity separating unit for recovering a liquefield solvent. An intermediate liquid storing unit is disposed between the condenser and the specific-gravity separating unit, and has a valve adapted to be automatically opened when the intermediate liquid storing unit stores a liquid of which amount exceeds a preset value, so that the liquid flows into the specific-gravity separating unit. With this solvent recovery apparatus, organic solvent gas or flon gas may be recovered.
    Type: Grant
    Filed: September 28, 1990
    Date of Patent: November 5, 1991
    Assignees: Osaka Gas Limited, Asahi Seisakusho Company Limited
    Inventors: Takeshi Maeda, Hiroshi Kawaguchi, Harukazu Yamaguchi, Hitoshi Sakai, Akio Ando, Yasuo Matsushita, Tetsuya Takemoto