Patents by Inventor Akira Zenno

Akira Zenno 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).

  • Adsorbent process for oily materials
    Patent number: 4102783
    Abstract: An adsorbent used for effectively collecting or removing oily materials floating on water or emulsified or dispersed in water composed mainly of unrefined lints or unrefined linters together with, if necessary, filter papers, synthetic fibers, or natural fibers as a mixture thereof.
    Type: Grant
    Filed: December 8, 1976
    Date of Patent: July 25, 1978
    Assignee: Daicel Ltd.
    Inventors: Akira Zenno, Toshiaki Uebayashi, Isamu Maruyama, Hidehiro Shiono