Inventor · disambiguated record
Hisashi Tsukijima
Also filed as: TSUKIJIMA HISASHI
17 granted patents·35 citations·filing 2010–2024
88Inventor score
Top patents by PatentIndex Score
17 records- 0191US8509651B2Image forming apparatusTSUKIJIMA HISASHI·Filed 2010·Granted Aug 13, 2013·13 cites·4 claims
- 0291US8396379B2Image forming apparatus for controlling unlocking of a toner cartridge replacing doorTSUKIJIMA HISASHI·Filed 2010·Granted Mar 12, 2013·12 cites·5 claims
- 0388US9316948B2Developing apparatus with discharge regulating memberCANON KK·Filed 2014·Granted Apr 19, 2016·5 cites·8 claims
- 0482US9442427B2Developing deviceCANON KK·Filed 2014·Granted Sep 13, 2016·3 cites·10 claims
- 0577US12379685B2Image forming apparatusCANON KK·Filed 2024·Granted Aug 5, 2025·0 cites·3 claims
- 0672US10031447B2Belt conveying device and image forming apparatus having steering control mechanismCANON KK·Filed 2016·Granted Jul 24, 2018·1 cites·13 claims
- 0771US9971283B2Belt conveyance apparatus and image forming apparatus for reduced belt bucklingCANON KK·Filed 2016·Granted May 15, 2018·1 cites·19 claims
- 0870US11994819B2Image forming apparatusCANON KK·Filed 2023·Granted May 28, 2024·0 cites·6 claims
- 0965US12092980B2Calculation system, image forming apparatus, and image forming systemCANON KK·Filed 2022·Granted Sep 17, 2024·0 cites·22 claims
- 1056US12085880B2Image forming apparatusCANON KK·Filed 2022·Granted Sep 10, 2024·0 cites·13 claims
- 1154US11886131B2Image forming apparatusCANON KK·Filed 2022·Granted Jan 30, 2024·0 cites·6 claims
- 1246US11835886B2Developer discharging method of developing device and developing deviceCANON KK·Filed 2022·Granted Dec 5, 2023·0 cites·6 claims
- 1346US11822264B2Developer discharging method of developing device and developing deviceCANON KK·Filed 2022·Granted Nov 21, 2023·0 cites·6 claims
- 1444US11086255B2Image forming apparatusCANON KK·Filed 2020·Granted Aug 10, 2021·0 cites·14 claims
- 1544US9500991B2Developing apparatus having supply device with compound spiral portionsCANON KK·Filed 2014·Granted Nov 22, 2016·0 cites·9 claims
- 1639US10254685B2Belt conveyance device and image forming apparatusCANON KK·Filed 2018·Granted Apr 9, 2019·0 cites·13 claims
- 1736US10766723B2Image forming apparatusCANON KK·Filed 2018·Granted Sep 8, 2020·0 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →