Patents by Inventor Tomoaki Iyoku

Tomoaki Iyoku 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).

  • LNG tank for ships supported by means of skirt
    Patent number: 5099779
    Abstract: A LNG tank for ships having a heat insulation material applied over the outer circumference thereof, the tank being supported on a ship hull via a vertical cylindrical skirt, wherein a portion of the tank above the equator is formed by a cylinder and by a top portion of the head structure with a upward convex portion, the head structure being arranged above the cylinder, and another portion of the tank below the equator is formed by a part of the sphere having a radius substantially equal with that of the horizontal section of the equator substantially up to the range of the lat. 30.degree., and the remaining portion of the tank further below the range is formed by a flat semi-spherical hull structure which is a part of the laternally elongated ellipsoid of gyration or semi-ellipsoid and having the aspect ratio of substantially 1.5.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: March 31, 1992
    Assignee: Mitsubishi Jukogyo Kabushiki Kaisha
    Inventors: Katsumi Kawaichi, Tomoaki Iyoku