Patents Assigned to Nippon Columbia Co., Ltd.
  • Moving-coil type pickup cartridge
    Patent number: 4488284
    Abstract: In a moving-coil type pickup cartridge, a vibrating system including an armature wound with a coil is disposed at an open end area of a magnet with a damper being interposed between the armature and the magnet, and the armature is placed directly under the influence of magnetic flux produced between the one and other ends of the magnet for generating a voltage without using any yoke.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: December 11, 1984
    Assignee: Nippon Columbia Co., Ltd.
    Inventors: Naohisa Aoki, Akira Matuki
  • Pickup tone arm
    Patent number: 4101133
    Abstract: This invention relates to a complex resonance type pickup tone arm in which a damping member is disposed at the middle of the arm to damp low and middle frequency resonances so that the tip of the arm is prevented from being bent down.
    Type: Grant
    Filed: October 13, 1976
    Date of Patent: July 18, 1978
    Assignee: Nippon Columbia Kabushikikaisha (Nippon Columbia Co., Ltd.)
    Inventors: Naohisa Aoki, Hitoshi Matsuda, Hideaki Hayashi
  • Phonograph
    Patent number: D250646
    Type: Grant
    Filed: April 12, 1976
    Date of Patent: December 26, 1978
    Assignee: Nippon Columbia Co., Ltd.
    Inventors: Motohiro Hashimoto, Masahide Akiyama, Haruo Koguchi, Toshiharu Horikoshi, Tsutomu Sakuma
  • Phonograph tone arm
    Patent number: D253410
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: November 13, 1979
    Assignee: Nippon Columbia Co., Ltd.
    Inventor: Isao Sasaki
  • Turntable for record player
    Patent number: D256690
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: September 2, 1980
    Assignee: Nippon Columbia Co. Ltd.
    Inventor: Takeshi Matumaru
  • Turntable for record player
    Patent number: D256913
    Type: Grant
    Filed: September 19, 1977
    Date of Patent: September 16, 1980
    Assignee: Nippon Columbia Co. Ltd.
    Inventor: Tomihiro Kaneko