Patents by Inventor Jinya Iizuka

Jinya Iizuka 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).

  • Collapsable dam
    Patent number: 4279540
    Abstract: A deformable dam made of an impermeable flexible membrane secured in a water tight manner to the bottom and side walls of a river. The flexible membrane is inflatable using either air or water, or a combination to vary the overall effective length of the dam.
    Type: Grant
    Filed: February 9, 1979
    Date of Patent: July 21, 1981
    Assignees: Kazuto Nakazawa, General Director Public Works Research Institute Ministry of Construction, Sumitomo Electric Industries, Ltd.
    Inventors: Kyozo Suga, Jinya Iizuka, Yoshiomi Tsuji
  • Method and apparatus for displacing oil and seawater in tanks of an oil tank
    Patent number: 4178868
    Abstract: Each of compartments of an oil tanker is divided by a flexible membrane into first and second sections one of which is used as an oil chamber. The membrane is made of an oil-resistant and chemical-resistant material. When an oil is loaded, the second section is unloaded, the second section is filled with a ballasting seawater, crashing the first section.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: December 18, 1979
    Assignee: Sumitomo Electric Industries Ltd.
    Inventors: Jinya Iizuka, Seinosuke Kato, Akio Matsuda