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USPTO Patent Rankings Data through Dec 31, 2025
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Ryo Imura — 21 Patents

Hitachi: 21 patents #1,645 of 28,497Top 6%
Kokubunji, JP: #95 of 714 inventorsTop 15%
Overall (All Time): #201,324 of 4,157,543Top 5%
21 Patents All Time
Ryo Imura has been granted 21 US patents while listed as an inventor at Hitachi. The first was granted in 1981 and the most recent in March 2007. Ryo Imura ranks #201,324 of 4,157,543 US inventors in our database (top 4.8%). Patent records list Ryo Imura in Kokubunji, JP.

Issued Patents All Time

Showing 1–21 of 21 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
7190254 Emigrant reception system, emigrant gate system, emigrant control system, emigrant control method, passport applicant information management method, layout of emigrant gate, immigrant reception system, immigrant gate system, immigrant control system, immigrant control method, layout of immigrant gate system, and passport Masaki Ogihara, Yasuhiko Mizuno 2007-03-13 $264,000
5808977 Tracking method and recording means thereby Hajime Koyanagi, Sumio Hosaka 1998-09-15 $102,000
5796706 Information recording apparatus Toshimichi Shintani, Kimio Nakamura, Sumio Hosaka 1998-08-18 $279,000
5689494 Surface atom fabrication method and apparatus Masakazu Ichikawa, Shigeyuki Hosoki, Fumihiko Uchida, Shigeo Kato, Yoshihisa Fujisaki +5 more 1997-11-18 $104,000
5627815 Precision machining method precision machining apparatus and data storage apparatus using the same Hajime Koyanagi, Sumio Hosaka 1997-05-06 $127,000
5604059 Mask structure having phase shifting pattern suitable for forming fine pattern on photosensitive film and method of manufacturing solid-state devices using such mask structure Yoshinori Hoshina, Kengo Asai, Mitsutaka Hikita, Atsushi Isobe, Ryo Suzuki +2 more 1997-02-18 $110,000
5471064 Precision machining method, precision machining apparatus and data storage apparatus using the same Hajime Koyanagi, Sumio Hosaka 1995-11-28 $108,000
5416331 Surface atom fabrication method and apparatus Masakazu Ichikawa, Shigeyuki Hosoki, Fumihiko Uchida, Shigeo Kato, Yoshihisa Fujisaki +5 more 1995-05-16 $95,000
5327371 Information recording and reproducing apparatus Yooji Maruyama, Yoshito Tsunoda, Kazuhisa Fujimoto 1994-07-05 $115,000
5323375 Information storage apparatus Sigeo Ihara, Tsuyoshi Uda 1994-06-21 $119,000
5309388 Solid state magnetic memory device Yooji Maruyama, Kazuhisa Fujimoto 1994-05-03 $90,000
4894098 Process for preparing magnetic layer and magnetic head prepared using the same Shigekazu Otomo, Noriyuki Kumasaka, Ryo Suzuki, Yutaka Sugita 1990-01-16 $37,000
4772976 Process for preparing magnetic layer and magnetic head prepared using the same Shigekazu Otomo, Noriyuki Kumasaka, Ryo Suzuki, Yutaka Sugita 1988-09-20 $94,000
4701385 Ion-implanted magnetic bubble device and a method of manufacturing the same Tadashi Ikeda, Yutaka Sugita 1987-10-20 $116,000
4600488 Control method of magnetic anisotropy and device utilizing the control method Yutaka Sugita, Noriyuki Kumasaka 1986-07-15 $117,000
4556582 Method of fabricating magnetic bubble memory device Tadashi Ikeda, Teruaki Takeuchi, Hiroshi Umezaki, Ryo Suzuki, Yutaka Sugita 1985-12-03 $46,000
4556583 Method of fabricating magnetic bubble memory device Tadashi Ikeda, Teruaki Takeuchi, Norio Ohta, Yutaka Sugita 1985-12-03 $46,000
4476152 Method for production of magnetic bubble memory device Tadashi Ikeda, Norio Ohta, Teruaki Takeuchi, Yutaka Sugita 1984-10-09 $37,000
4460412 Method of making magnetic bubble memory device by implanting hydrogen ions and annealing Tadashi Ikeda, Ryo Suzuki, Nagatugu Koiso, Teruaki Takeuchi, Hiroshi Umezaki +1 more 1984-07-17 $44,000
4321690 Magnetic bubble memory module 1982-03-23 $63,000
4246646 Magnetic bubble chip-mounting plane 1981-01-20 $60,000