ST

Seiji Tsuru

Canon: 12 patents #5,447 of 19,416Top 30%
HI Hitachi: 8 patents #5,191 of 28,497Top 20%
HT Hitachi Plant Technologies: 2 patents #55 of 279Top 20%
Overall (All Time): #204,092 of 4,157,543Top 5%
21
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11971668 Electrophotographic roller, process cartridge and electrophotographic image forming apparatus Ryosuke Takayama, Hiroaki Komatsu, Koji Yatsu 2024-04-30
10996581 Conductive member Norifumi Muranaka, Satoru Yamada, Kazuhiro Yamauchi, Yuka Muranaka 2021-05-04
10678161 Electrophotographic member having elastic layer with elastic modulus of 0.5 to 3.0 MPA and coating layer with elastic modulus of 5.0 to 100 MPA Noriyuki Doi, Ryo Sugiyama, Kazuaki Nagaoka, Minoru Nakamura 2020-06-09
10635019 Developing roller, electrophotographic process cartridge and electrophotographic image forming apparatus Noriyuki Doi, Ryo Sugiyama, Minoru Nakamura 2020-04-28
9811021 Conductive member Norifumi Muranaka, Satoru Yamada, Kazuhiro Yamauchi, Yuka Muranaka 2017-11-07
9625854 Developer carrying member, electrophotographic process cartridge, and electrophotographic image forming apparatus Takashi Koyanagi, Minoru Nakamura, Kazuaki Nagaoka, Yuto Miyauchi 2017-04-18
9023465 Electroconductive member, process cartridge and electrophotographic image forming apparatus Satoru Yamada, Kazuhiro Yamauchi, Norifumi Muranaka, Yuka Hirakoso 2015-05-05
8449975 Electroconductive member, process cartridge and electrophotographic apparatus Yuka Hirakoso, Satoru Yamada, Kazuhiro Yamauchi, Norifumi Muranaka 2013-05-28
8298670 Electro-conductive member for electrophotography, process cartridge, and electrophotographic apparatus Norifumi Muranaka, Satoru Yamada, Kazuhiro Yamauchi, Yuka Hirakoso 2012-10-30
7172015 Heat exchanger for air compressor Haruo Miura, Kazuki Takahashi, Minoru Taniyama, Tomohiro Naruse, Toshio Hattori 2007-02-06
7136781 Compressor remote monitoring system Takashi Saito, Shinichi Hirose, Makoto Yamazaki 2006-11-14
7054579 Charging member, process cartridge, and electrophotographic apparatus Tomohito Taniguchi, Noriaki Kuroda, Hiroshi Inoue, Toshihiro Otaka 2006-05-30
6962746 Conductive member, and process cartridge and electrophotographic apparatus which make use of the same Tomohito Taniguchi, Hiroshi Inoue, Hiroyuki Osada, Hisao Kato, Noriaki Kuroda +3 more 2005-11-08
6679689 Screw compressor Kazuki Takahashi, Minoru Taniyama, Haruo Miura 2004-01-20
6599094 Screw compressor system and operating method thereof Kazuya Kanazaki, Shinichi Hirose, Junji Okita 2003-07-29
6572350 Screw compressor Kazuki Takahashi, Minoru Taniyama, Haruo Miura 2003-06-03
6517325 Air compressor and method of operating the same Kazuki Takahashi 2003-02-11
5613843 Package-type screw compressor Shinichi Hirose, Junji Okita, Tadashi Kaneki, Katsuaki Kikuchi 1997-03-25
5401149 Package-type screw compressor having coated rotors Shinichi Hirose, Junji Okita, Tadashi Kaneki, Katsuaki Kikuchi 1995-03-28
4770609 Two-stage vacuum pump apparatus and method of operating the same Riichi Uchida, Kazuaki Shiinoki, Kotaro Naya 1988-09-13
4664601 Operation control system of rotary displacement type vacuum pump Riichi Uchida, Katsumi Matsubara 1987-05-12