Patents by Inventor Akinobu Fujikawa

Akinobu Fujikawa 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).

  • Tape cassette with slidable shutter
    Patent number: 5161079
    Abstract: A tape cassette is provided which is suitable for digital recording and playback which require high reliability, is interchangeable in terms of dimensions and shape with conventional compact cassettes, and is provided with a shutter member which selectively opens and closes insertion windows for the magnetic head and pinch rollers and is normally urged in the closing direction, to thereby prevent dust, etc. from entering. Moreover, since the shutter member is arranged to slide in the longitudinal direction, there is no increase in the volume of the tape cassette, even during opening or closing of the shutter member.
    Type: Grant
    Filed: January 16, 1991
    Date of Patent: November 3, 1992
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mineo Ohshima, Akinobu Fujikawa