Patents by Inventor Kazushi Kawamura

Kazushi Kawamura 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).

  • Patent number: 6179947
    Abstract: A method and apparatus for manufacturing laminates are arranged for forming a laminate block by sequentially folding back continuous metal sheets 3 and 4 drawn through outlets 16 out of rolls 5 and 6 of the sheets wound on reels 1 and 2, with synthetic resin sheet members 9 and interlayers 10 alternately interposed between the metal sheets, into multiple stages, and pressing the thus stacked laminate block while electrically heating the continuous metal sheets 3 and 4 in the laminate block, wherein the stacking is performed while keeping the continuous metal sheets 3 and 4 in tension between the outlets 16 of the reels 1 and 2 and each end edge of the laminate block 12.
    Type: Grant
    Filed: October 14, 1998
    Date of Patent: January 30, 2001
    Assignee: Matsushita Electric Works, Ltd.
    Inventors: Hiroshi Maeda, Kazushi Kawamura, Takeshi Okamoto
  • 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
  • Patent number: 5853528
    Abstract: A method and apparatus for manufacturing laminates are arranged for forming a laminate block by sequentially folding back continuous metal sheets 3 and 4 drawn through outlets 16 out of rolls 5 and 6 of the sheets wound on reels 1 and 2, with synthetic resin sheet members 9 and interlayers 10 alternately interposed between the metal sheets, into multiple stages, and pressing the thus stacked laminate block while electrically heating the continuous metal sheets 3 and 4 in the laminate block, wherein the stacking is performed while keeping the continuous metal sheets 3 and 4 in tension between the outlets 16 of the reels 1 and 2 and each end edge of the laminate block 12.
    Type: Grant
    Filed: March 18, 1997
    Date of Patent: December 29, 1998
    Assignee: Marsushita Electric Works. Ltd.
    Inventors: Hiroshi Maeda, Kazushi Kawamura, Takeshi Okamoto