OI

Osamu Ichihashi

Ricoh Company: 28 patents #700 of 9,818Top 8%
Overall (All Time): #138,208 of 4,157,543Top 4%
28
Patents All Time

Issued Patents All Time

Showing 1–25 of 28 patents

Patent #TitleCo-InventorsDate
10558148 Belt device and image forming apparatus incorporating same 2020-02-11
10234794 Roller member and image forming apparatus including the roller member Masakazu Imai, Tsutomu Kato, Katsuhito Haruno, Takahiro Konishi 2019-03-19
10191415 Transfer rotator and image forming apparatus comprising the same Takehide Mizutani, Naoto Kochi, Katsuhito Haruno, Atsushi Nakamoto, Masakazu Imai 2019-01-29
10114331 Transfer device and image forming apparatus incorporating same Junpei Fujita, Katsuhito Haruno, Atsushi Nakamoto, Masakazu Imai, Takehide Mizutani +1 more 2018-10-30
9897946 Roller member including a first and second high resistance member and image forming apparatus including the roller member Masakazu Imai, Masaharu Furuya, Tsutomu Kato, Katsuhito Haruno, Tatsuya Ohsugi 2018-02-20
9778603 Transfer device and image forming apparatus incorporating same Tsutomu Kato, Masakazu Imai, Katsuhito Haruno, Takahiro Konishi 2017-10-03
9465331 Image forming apparatus Masakazu Imai, Tsutomu Kato, Naoki Iwaya 2016-10-11
9395659 Image forming apparatus Shinya Tanaka, Hirokazu Ishii, Tsutomu Kato, Yasufumi Takahashi, Takehide Mizutani +6 more 2016-07-19
9335668 Transfer device and image forming apparatus including same Ryuuichi Mimbu 2016-05-10
9274461 Transfer device and image forming apparatus incorporating same Tsutomu Kato, Hirokazu Ishii, Takehide Mizutani, Shinya Tanaka, Yasufumi Takahashi +1 more 2016-03-01
9256165 Transfer device and image forming apparatus incorporating same Yasufumi Takahashi, Yuji Kato, Junpei Fujita 2016-02-09
9213272 Image forming apparatus including a holding member to hold a roller relative to a frame Yasufumi Takahashi, Junpei Fujita 2015-12-15
9141039 Image forming apparatus including a cam member to separate a transfer member Yuji Kato, Ryuuichi Mimbu, Yasufumi Takahashi, Kenji Sengoku, Junpei Fujita 2015-09-22
9134656 Image forming apparatus Takehide Mizutani, Hirokazu Ishii, Tsutomu Kato, Yasufumi Takahashi, Shinya Tanaka +1 more 2015-09-15
9063472 Image forming apparatus and belt tensioning unit Kenji Sengoku, Ryuuichi Mimbu, Junpei Fujita 2015-06-23
9037042 Image forming apparatus Yuji Kato, Yasufumi Takahashi 2015-05-19
8831466 Image forming apparatus Junpei Fujita, Ryuuichi Mimbu, Kenji Sengoku 2014-09-09
8811867 Transfer device and image forming apparatus using same Ryuuichi Mimbu, Kenji Sengoku, Junpei Fujita 2014-08-19
8798511 Image forming apparatus 2014-08-05
8737865 Image forming apparatus Ryuuichi Mimbu, Kenji Sengoku, Junpei Fujita 2014-05-27
8718500 Image forming apparatus Ryuichi MINBU, Kenji Sengoku, Junpei Fujita 2014-05-06
8571450 Image forming apparatus 2013-10-29
8548345 Image forming apparatus with transfer nip adjustment function Ryuichi Minbe, Katsuya Kawagoe, Kenji Sengoku, Junpei Fujita 2013-10-01
8526842 Image forming apparatus Ryuuichi Mimbu, Kenji Sengoku, Junpei Fujita 2013-09-03
8483597 Transfer assembly and image forming apparatus using same Ryuuichi Mimbu, Kenji Sengoku, Junpei Fujita 2013-07-09