Patents by Inventor Akira Otsubo

Akira Otsubo 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).

  • Nuclear reactor
    Patent number: 4495137
    Abstract: A nuclear reactor in which the space between a reactor vessel and a guard vessel disposed outside the reactor vessel is kept in a pressurized, sealed state. The sealed space and the space outside the guard vessel are communicate only through a liquid manometer structure, which is kept sealed with liquid.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: January 22, 1985
    Assignee: Doryokuro Kakunenryo Kaihatsu Jigyodan
    Inventor: Akira Otsubo