Patents by Inventor Masaaki Sunohara

Masaaki Sunohara 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).

  • Upright injection-compression pressing machine for the manufacture of information carrier discs
    Patent number: 4427353
    Abstract: An upright injection-compression pressing machine for the manufacture of information carrier discs, such as photograph records and video discs, has a mold clamper assembly including a pair of stamper bearing molds movable relative to each other in a vertical direction towards and away from each other, and an injector assembly mounted on the clamper assembly in alignment with the direction of the relative movement of the molds.
    Type: Grant
    Filed: December 22, 1981
    Date of Patent: January 24, 1984
    Assignees: Matsushita Electric Industrial Co., Ltd., Teichiku Co., Ltd., Nissei Plastic Industrial Co., Ltd.
    Inventors: Shoji Omiya, Masaaki Sunohara, Tokihalu Nakagawa, Seiji Inagaki, Junnosuke Yamawaki, Nobuyuki Nakamura, Kaoru Yanagisawa