Patents by Inventor Masayoshi Uchida

Masayoshi Uchida 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: 4209670
    Abstract: A moving-coil type pickup cartridge comprising a cantilever provided at the free end thereof with a stylus for tracing a sound groove of a record disc, a coil plate provided on the cantilever in a manner to vibrate in response to vibration of the stylus, and an arrangement for producing an effective magnetic field within a specific gap. The coil plate comprises a thin electrically insulating base plate and at least one coil which is formed from a thin film in a spirally-shaped pattern on at least one surface of the base plate. The coil plate has at least one upright part formed by bending the base plate together with a portion of the coil and interposed in a freely vibratory manner within said gap of the magnetic field producing arrangement and a mounting part integrally joined to the upright part and fixed to the cantilever.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: June 24, 1980
    Assignee: Victor Company of Japan, Limited
    Inventors: Tsuyoshi Ono, Norio Shibata, Katsuhiko Oguri, Masayoshi Uchida, Kazuhiro Sato, Hidetoshi Sato