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USPTO Patent Rankings Data through Sept 30, 2025
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Ikuo Nishida — 35 Patents

HSHitachi-Lg Data Storage: 19 patents #2 of 294Top 1%
Hitachi: 18 patents #2,067 of 28,497Top 8%
TKToshiba Tec Kabushiki Kaisha: 4 patents #629 of 1,664Top 40%
HCHitachi Consumer Electronics Co.: 4 patents #57 of 447Top 15%
Kabushiki Kaisha Toshiba: 4 patents #6,684 of 21,451Top 35%
HIHitachi Video Engineering, Incorporated: 2 patents #34 of 181Top 20%
HCHitachi Engineering Co.: 1 patents #187 of 572Top 35%
PFPostech Academy-Industry Foundation: 1 patents #529 of 1,477Top 40%
Overall (All Time): #98,699 of 4,157,543Top 3%
35 Patents All Time

Issued Patents All Time

Showing 26–35 of 35 patents

Patent #TitleCo-InventorsDate
5982719 Disc auto changer for recording or reproducing information on a desired disc of a plurality of discs in a magazine Tatsumi Nishijima, Kyuichiro Nagai, Tomomi Okamoto, Kouhei Takita, Katsuyuki Tanaka +3 more 1999-11-09
5862119 Disc inclining/disc inverting mechanism in a disc storage/playback apparatus Tatsumi Nishijima, Kyuichiro Nagai, Tomomi Okamoto, Kouhei Takita 1999-01-19
5489970 Feeding timing control for an image forming apparatus 1996-02-06
5315460 Magnetic recording and reproducing apparatus including S fixed chassis for supporting a head drum and a movable chassis for mounting a tape cassette Hidekazu Takeda, Masao Iwakura, Nobuo Masuoka, Tetsuo Itou, Yoshiharu Yamashita +2 more 1994-05-24
5278707 Tape loading mechanism for magnetic recording and/or reproducing apparatus Naoko Tsuchiya, Masao Iwakura, Hidekazu Takeda, Kyuichirou Nagai, Yoshiharu Yamashita +3 more 1994-01-11
5124854 Cassette loading apparatus having an inner cassette holder supported on an outer cassette holder Koji Iyota, Yosiharu Yamasita, Motonori Ohmori, Hidekazu Takeda, Masao Iwakura +1 more 1992-06-23
5065264 Capstan arrangement for a magnetic recording/reproduction apparatus Motonori Ohmori, Koji Iyota, Hidekazu Takeda, Masao Iwakura, Tetsuo Itou 1991-11-12
5014140 Apparatus for drawing out tape from a cassette Shinichi Hanawa, Hideyuki Kawase 1991-05-07
4833562 Rotary magnetic head cylinder device for suppressing vibrations ofa magnetic tape Masanori Kochi, Juichi Morikawa, Makoto Ibe, Toshio Osada, Hitoshi Takizawa +4 more 1989-05-23
4757398 Tape withdrawing device for a magnetic recording and/or reproducing apparatus Shinichi Hanawa, Hideyuki Kawase 1988-07-12