HI

Hirokazu Ishii

Ricoh Company: 51 patents #217 of 9,818Top 3%
Canon: 27 patents #2,142 of 19,416Top 15%
MA Maxell: 6 patents #102 of 437Top 25%
Samsung: 4 patents #25,854 of 75,807Top 35%
KP Kabushiki Kaisha Pilot: 2 patents #49 of 160Top 35%
HI Hitachi: 2 patents #13,388 of 28,497Top 50%
JA Japan Aerospace Exploration Agency: 1 patents #160 of 546Top 30%
HC Hitachi Computer Peripherals Co.: 1 patents #41 of 133Top 35%
Overall (All Time): #16,679 of 4,157,543Top 1%
93
Patents All Time

Issued Patents All Time

Showing 26–50 of 93 patents

Patent #TitleCo-InventorsDate
9942493 Image pickup apparatus and reading method for outputting signals based on light flux passing through an entire area of an exit pupil and light flux passing through part of the exit pupil 2018-04-10
9835987 Image forming apparatus and transfer bias control Kenji Sugiura, Hiroyoshi Haga, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita +5 more 2017-12-05
9817341 Image forming apparatus Tatsuya Ohsugi, Kenji Sugiura, Hiroyoshi Haga, Naohiro Kumagai, Seiichi Kogure +5 more 2017-11-14
9811046 Image forming apparatus Yuuji Wada, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kazuki Yogosawa +4 more 2017-11-07
9781329 Image capture apparatus and method for controlling the same 2017-10-03
9766575 Image forming apparatus Tatsuya Ohsugi, Kenji Sugiura, Hiroyoshi Haga, Yuuji Wada, Takehide Mizutani +5 more 2017-09-19
9740156 Image forming apparatus that adjusts a transfer bias according to surface properties of a transfer target Yuuji Wada, Hiroyoshi Haga, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita +4 more 2017-08-22
9720355 Image forming apparatus Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Toshitaka Yamaguchi, Hiroyoshi Haga +7 more 2017-08-01
9667878 Image capturing apparatus and control method for image capturing apparatus 2017-05-30
9645530 Image forming apparatus Naoto Kochi, Kenji Sugiura, Hiroyoshi Haga, Yuuji Wada, Takehide Mizutani +4 more 2017-05-09
9632461 Image forming apparatus controlling transfer bias based on temperature and humidity Kenji Sugiura, Toshitaka Yamaguchi, Hiroyoshi Haga, Shinya Tanaka, Takehide Mizutani +6 more 2017-04-25
9535375 Image forming apparatus with transfer output device outputting superimposed bias as transfer bias Shinya Tanaka, Yasunobu Shimizu, Keigo Nakamura 2017-01-03
9531939 Detection apparatus, image pickup apparatus, image pickup system, and control method of the detection apparatus 2016-12-27
9488937 Image forming apparatus Shinya Tanaka, Hiromi Ogiyama, Yasunobu Shimizu, Keigo Nakamura 2016-11-08
9479688 Image capture apparatus 2016-10-25
9459564 Image forming apparatus Tatsuya Ohsugi, Kenji Sugiura, Jyunya Sakuraba, Toshitaka Yamaguchi, Hiroyoshi Haga +7 more 2016-10-04
9454107 Image forming apparatus Yasunobu Shimizu, Shinya Tanaka, Keigo Nakamura 2016-09-27
9426354 Image processing apparatus, image sensing apparatus, control method, and recording medium 2016-08-23
9395659 Image forming apparatus Shinya Tanaka, Tsutomu Kato, Yasufumi Takahashi, Takehide Mizutani, Osamu Ichihashi +6 more 2016-07-19
9395658 Image forming apparatus Yuuji Wada, Naohiro Kumagai, Seiichi Kogure, Junpei Fujita, Kazuki Yogosawa +4 more 2016-07-19
9389551 Fixing unit and image forming apparatus including same 2016-07-12
9291934 Image forming apparatus Yasunobu Shimizu, Hiromi Ogiyama, Shinya Tanaka, Keigo Nakamura 2016-03-22
9291955 Image forming apparatus and transfer bias application device therein Keigo Nakamura, Yasunobu Shimizu, Hiromi Ogiyama, Shinya Tanaka 2016-03-22
9285722 Image forming apparatus having transfer bias control Shinya Tanaka, Yasunobu Shimizu, Keigo Nakamura 2016-03-15
9274461 Transfer device and image forming apparatus incorporating same Tsutomu Kato, Takehide Mizutani, Shinya Tanaka, Yasufumi Takahashi, Osamu Ichihashi +1 more 2016-03-01