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USPTO Patent Rankings Data through Dec 31, 2025
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Koichi Niwa — 31 Patents

Fujitsu Limited: 25 patents #1,029 of 24,456Top 5%
DCDai-Ichi Kogyo Seiyaku Co.: 4 patents #42 of 288Top 15%
Hitachi: 2 patents #13,405 of 28,497Top 50%
Tama, JP: #15 of 402 inventorsTop 4%
Overall (All Time): #115,823 of 4,157,543Top 3%
31 Patents All Time
Koichi Niwa has been granted 31 US patents while listed as an inventor at Fujitsu Limited. The first was granted in 1980 and the most recent in May 2003. Koichi Niwa ranks #115,823 of 4,157,543 US inventors in our database (top 2.8%). Patent records list Koichi Niwa in Tama, JP.

Patents per Year

Patents granted per year, 1980 to 2003Bar chart with a peak of 6 patents in 1994.peak 61980: 1 patents19801982: 2 patents1984: 1 patents19841985: 1 patents1987: 2 patents19871988: 1 patents1989: 1 patents19891990: 1 patents1991: 5 patents19911992: 3 patents1994: 6 patents19941995: 1 patents1996: 1 patents19961997: 3 patents2001: 1 patents20012003: 1 patents2003

Issued Patents All Time

Showing 1–25 of 31 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
6560435 Electrophotographic image forming device having projections on a surface of an intermediate transfer body Masashi Yamamoto, Tetsuo Ishikawa, Shinichi Hosaka, Masahiro Nakano, Masahiko Saito +1 more 2003-05-06 $107,000
6193905 Immersion cooling coolant Mitsutaka Yamada, Kishio Yokouchi, Nobuo Kamehara 2001-02-27
5629269 Process for forming oxide superconducting films with a plurality of metal buffer layers Kazunori Yamanaka, Takuya Uzumaki, Nobuo Kamehara 1997-05-13
5600420 Image transfer element in a color image forming apparatus Masahiko Saito, Masashi Yamamoto, Tetsuro Akasaki, Jin Sawahata, Masahiro Nakano +2 more 1997-02-04 $84,000
5593526 Process for preparing a multi-layer wiring board Kishio Yokouchi, Hiroshi Kamezaki, Masato Wakamura, Nobuo Kamehara 1997-01-14
5585332 Process for preparing a perovskite Bi-containing superconductor film Atsushi Tanaka, Nobuo Kamehara 1996-12-17
5443786 Composition for the formation of ceramic vias Hiromitsu Yokoyama, Koji Omote, Hitoshi Suzuki, Mineharu Tsukada, Nobuo Kamehara 1995-08-22
5349499 Immersion cooling coolant and electronic device using this coolant Mitsutaka Yamada, Kishio Yokouchi, Nobuo Kamehara 1994-09-20
5312803 Process for producing Bi- and Pb-containing oxide superconducting wiring films Atsushi Tanaka, Kazunori Yamanaka, Nobuo Kamehara 1994-05-17
5306702 Process for producing Bi-Pb-Sr-Ca-Cu-O superconducting films Atsushi Tanaka, Nobuo Kamehara 1994-04-26
5287620 Process of producing multiple-layer glass-ceramic circuit board Hitoshi Suzuki, Wataru Yamagishi, Kaoru Hashimoto, Nobuo Kamehara 1994-02-22
5286713 Method for manufacturing an oxide superconducting circuit board by printing Hiromitsu Yokoyama, Yoshihiko Imanaka, Kazunori Yamanaka, Nobuo Kamehara, Takuya Uzumaki +2 more 1994-02-15
5275889 Multi-layer wiring board Kishio Yokouchi, Hiroshi Kamezaki, Masato Wakamura, Nobuo Kamehara 1994-01-04
5141917 Multilayer deposition method for forming Pb-doped Bi-Sr-Ca-Cu-O Superconducting films Atsushi Tanaka, Nobuo Kamehara 1992-08-25
5086114 Method of producing imide bond-containing resins Akira Taniuchi, Hirohito Komori 1992-02-04
5081070 Superconducting circuit board and paste adopted therefor Hiromitsu Yokoyama, Yoshihiko Imanaka, Kazunori Yamanaka, Nobuo Kamehara, Takuya Uzumaki +2 more 1992-01-14
5072000 Method of producing imide bond-containing compounds and flame retardants comprising such compounds Akira Taniuchi, Hirohito Komori 1991-12-10
5049541 Process for preparing superconductor Takuya Uzumaki, Kazunori Yamanaka, Nobuo Kamehara 1991-09-17
5047477 Method of producing imide bond-containing resins and flame retardants comprising said resins Akira Taniuchi 1991-09-10
5038571 Production and use of coolant in cryogenic devices Kishio Yokouchi, Mitsutaka Yamada, Nobuo Kamehara 1991-08-13
5015314 Method for production of ceramic circuit board Hitoshi Suzuki, Hiromitsu Yokoyama, Mineharu Tsukada, Hiromi Ogawa, Nobuo Kamehara 1991-05-14
4954480 Multi-layer superconducting circuit substrate and process for manufacturing same Yoshihiko Imanaka, Takato Machi, Kazunori Yamanaka, Hiromitsu Yokoyama, Nobuo Kamehara 1990-09-04
4883843 Imide bond-containing resins and flame retardants comprising said resins Akira Taniuchi, Hirohito Komori 1989-11-28
4761325 Multilayer ceramic circuit board Kazuaki Kurihara, Nobuo Kamehara, Hiromitsu Yokoyama, Hiromi Ogawa, Kishio Yokouchi +1 more 1988-08-02
4704658 Evaporation cooling module for semiconductor devices Kishio Yokouchi, Yuichi Suzuki 1987-11-03