HT

Hisashi Tsukijima

Canon: 17 patents #3,927 of 19,416Top 25%
📍 Ibaraki, JP: #498 of 6,779 inventorsTop 8%
Overall (All Time): #265,932 of 4,157,543Top 7%
17
Patents All Time

Issued Patents All Time

Showing 1–17 of 17 patents

Patent #TitleCo-InventorsDate
12379685 Image forming apparatus Keisuke Mogi, Yoshiya Numata, Masaki Maeno 2025-08-05
12092980 Calculation system, image forming apparatus, and image forming system Koji Suzuki, Keisuke Mogi, Yuma Inui, Yoshiya Numata 2024-09-17
12085880 Image forming apparatus Ryo Aihara 2024-09-10
11994819 Image forming apparatus Keisuke Mogi, Yoshiya Numata, Masaki Maeno 2024-05-28
11886131 Image forming apparatus Yoshiya Numata 2024-01-30
11835886 Developer discharging method of developing device and developing device Hiroki Takano 2023-12-05
11822264 Developer discharging method of developing device and developing device Hiroki Takano 2023-11-21
11086255 Image forming apparatus Takashi Tsujimura, Kensuke Kaneko 2021-08-10
10766723 Image forming apparatus Shimpei Hanayama 2020-09-08
10254685 Belt conveyance device and image forming apparatus 2019-04-09
10031447 Belt conveying device and image forming apparatus having steering control mechanism 2018-07-24
9971283 Belt conveyance apparatus and image forming apparatus for reduced belt buckling Shinya Kitago, Yuichi Tanabe 2018-05-15
9500991 Developing apparatus having supply device with compound spiral portions Takanori Iida, Yusuke Ishida 2016-11-22
9442427 Developing device Yusuke Ishida, Takanori Iida 2016-09-13
9316948 Developing apparatus with discharge regulating member Yusuke Ishida, Takanori Iida 2016-04-19
8509651 Image forming apparatus 2013-08-13
8396379 Image forming apparatus for controlling unlocking of a toner cartridge replacing door 2013-03-12