Patents by Inventor Seiji Okabayashi

Seiji Okabayashi 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 treating air containing hydrocarbon vapor with a composite adsorbent material
    Patent number: 5049365
    Abstract: Disclosed is a composite adsorbent consisting of a molded body of a homogeneous mixture comprising powdery active carbon and hydrous alumina of the pseudoboehmite type. This composite adsorbent has high mechanical strength and abrasion resistance. This composite adsorbent is excellent in the capacity of adsorbing organic components such as gasoline, and the desorption of the adsorbed components can be easily accomplished at a high desorption ratio. These excellent capacities are retained even if the adsorption-desorption cycle is repeated. Accordingly, this composite adsorbent is especially valuable as the adsorbent for an automobile canister.
    Type: Grant
    Filed: March 1, 1990
    Date of Patent: September 17, 1991
    Assignee: Mizusawa Industrial Chemicals, Ltd.
    Inventors: Seiji Okabayashi, Hirofumi Watanabe, Kiyoshi Abe, Masahide Ogawa
  • Composite adsorbent
    Patent number: 4963519
    Abstract: Disclosed is a composite adsorbent consisting of a molded body of homogeneous mixture comprising powdery active carbon and hydrous alumina of the pseudoboehmite type. This composite adsorbent has high mechanical strength and abrasion resistance. This composite adsorbent is excellent in the capacity of adsorbing organic components such as gasoline, and the desorption of the adsorbed components can be easily accomplished at a high desorption ratio. These excellent capacities are retained even if the adsorption-desorption cycle is repeated. Accordingly, this composite adsorbent is especially valuable as the adsorbent for an automobile canister.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: October 16, 1990
    Assignee: Mizusawa Industrial Chemcals, Ltd.
    Inventors: Seiji Okabayashi, Hirofumi Watanabe, Kiyoshi Abe, Masahide Ogawa