Patents by Inventor Hirohiko Tohgeyama

Hirohiko Tohgeyama 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).

  • Method for manufacturing laminate and apparatus for manufacturing same
    Patent number: 5891291
    Abstract: A method for manufacturing a laminate includes steps of forming a laminated combination of synthetic resin sheet material with a metal foil laminated each other, thermoforming under a pressure the laminated combination while supplying an electric current to the metal foil, and, after termination of the current supply, cooling thus obtained laminate while further applying a pressure, whereby the laminated combination can be uniformly heated into its core part to allow the laminate of uniform quality to be obtained, while shortening manufacturing lead time and minimizing surface roughness.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: April 6, 1999
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Takeshi Okamoto, Kazushi Kawamura, Hirohiko Tohgeyama, Hiroshi Maeda