Patents by Inventor Tadahiro Kuwa

Tadahiro Kuwa 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).

  • Disc cartridge
    Patent number: 4799123
    Abstract: A disc cartridge having a case, a disc contained in the case, a shutter mechanism for opening and closing a head insertion window and drive shaft insertion hole and a disc clamping mechanism for clamping the disc when the disc is not in use, the disc clamping mechanism functionally entirely independent of the movement of the shutter mechanism.
    Type: Grant
    Filed: July 14, 1987
    Date of Patent: January 17, 1989
    Assignee: Hitachi Maxell, Ltd.
    Inventors: Yasunori Kanazawa, Haruo Arai, Tadahiro Kuwa