Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
HK

Hiroshi Kitaguchi — 109 Patents

Hitachi: 72 patents #100 of 28,497Top 1%
Fujitsu Limited: 30 patents #760 of 24,456Top 4%
FUFujifilm: 4 patents #1,747 of 4,519Top 40%
FIFuji Immunopharmaceuticals: 2 patents #3 of 20Top 15%
UNUnknown: 2 patents #12,644 of 83,584Top 20%
HEHitachi-Ge Nuclear Energy: 1 patents #139 of 313Top 45%
SCSchering: 1 patents #1,469 of 2,442Top 65%
Naka, JP: #1 of 152 inventorsTop 1%
Overall (All Time): #12,249 of 4,157,543Top 1%
109 Patents All Time

Issued Patents All Time

Showing 76–100 of 109 patents

Patent #TitleCo-InventorsDate
5457322 Semiconductor radiation detection apparatus for discriminating radiation having differing energy levels Shigeru Izumi 1995-10-10
5436221 Tumor metastasis inhibiting compounds and methods Hiroyuki Komazawa, Masayoshi Kojima, Hideto Mori, Naoyuki Nishikawa, Hideaki Satoh +4 more 1995-07-25
5321269 Neutron individual dose meter, neutron dose rate meter, neutron detector and its method of manufacture Shigeru Izumi, Akihisa Kaihara 1994-06-14
5252706 Peptide derivative amphiphatic compound, intermediate thereof and liposome and film comprising peptide derivative amphiphatic compound Ryoichi Nemori 1993-10-12
5206027 Amphipathic compound and liposome comprising the same 1993-04-27
5099127 Portable intensitometer and apparatus for centralized control of exposure using the intensitometer Shigeru Izumi, Satoshi Suzuki, Satoru Kawasaki, Masahiro Kondo, Shinji Mitani +2 more 1992-03-24
5076502 System for discriminating radiation-contaminated fragments and apparatus for measuring radioactivity of fragments Shigeru Izumi, Hideo Yusa, Makoto Kikuchi 1991-12-31
4983494 Image forming process including heating step Masatoshi Kato 1991-01-08
4879466 Semiconductor radiation detector Shigeru Izumi, Satoshi Suzuki 1989-11-07
H691 Heat developable photographic element Masatoshi Kato 1989-10-03
4845018 Image-forming process involving heating step Kozo Sato, Masashi Takeuchi, Masaaki Tsukase, Masatoshi Kato 1989-07-04
4824759 Method for forming an image Kozo Sato, Masashi Takeuchi, Masaaki Tsukase, Masatoshi Kato 1989-04-25
4777367 Method and apparatus for measuring the distribution of radioactivity Satoru Kawasaki, Masaharu Sakagami, Masahiro Kondo 1988-10-11
4775610 Method for the formation of photographic images including heating step Kozo Sato, Masatoshi Kato 1988-10-04
4729936 Image forming process including a heating step Kozo Sato, Masatoshi Kato 1988-03-08
4696887 Method for formation of an image comprising a heating step Kozo Sato, Masashi Takeuchi, Masaaki Tsukase, Masatoshi Kato 1987-09-29
4695525 Image forming process Masaaki Tsukase, Kozo Sato, Masashi Takeuchi, Masatoshi Kato 1987-09-22
4678739 Image forming method including heating step Masashi Takeuchi, Kozo Sato, Masaaki Tsukase, Masatoshi Kato 1987-07-07
4678735 Heat developable light-sensitive material with development inhibitor releaser Masatoshi Kato, Kozo Sato, Masasi Takeuchi, Masaaki Tsukase 1987-07-07
4675277 Heat developable light-sensitive material Kozo Sato, Hiroyuki Hirai 1987-06-23
4670373 Acid precursor Masatoshi Kato 1987-06-02
4656126 Heat-developable color light-sensitive material Masatoshi Kato 1987-04-07
4643964 Heat-developable light-sensitive material with electrically conductive layer Satoru Sawada, Hideki Naito 1987-02-17
4639408 Process for image formation comprising a heating step Masatoshi Kato 1987-01-27
4626499 Heat developable light-sensitive material Masatoshi Kato 1986-12-02