Patents by Inventor Kakuichi Kodama

Kakuichi Kodama 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).

  • Spiral wound gasket and fabrication method thereof
    Patent number: 5082296
    Abstract: A spiral wound gasket is formed by winding combinedly and spirally a metal strip having at least one bend along its lateral direction and a belt-shaped filler in such a way that the metal strip and the filler are laminated together along their longitudinal direction and the filler protrudes from both lateral edges of the metal strip. The spiral wound gasket employs, as the filler, a flexible tape of carbon/carbon composites having a structure in which a carbon fiber, in the form of a bundle or string, is contained in the interior of an expanded graphite tape and the carbon fiber is located at the bend of the flexible tape formed when the laminate of the flexible tape and the metal strip in is wound. The spiral wound gasket is used as a pipe fitting etc. under high temperature and pressure conditions.
    Type: Grant
    Filed: February 27, 1990
    Date of Patent: January 21, 1992
    Assignee: extra-ministerial bureau of Ministry of International Trade and Industry, Japan Agency for Industrial Science and Technology
    Inventors: Junichi Aizawa, Yasushi Omata, Tatsuo Shimoyama, Kakuichi Kodama