Inventor · disambiguated record
Keizo Kojima
Also filed as: KOJIMA KEIZO
11 granted patents·3 pending applications·36 citations·filing 1999–2025
85Inventor score
Top patents by PatentIndex Score
14 records- 0191US10547244B2Power supply apparatus and image forming apparatusCANON KK·Filed 2019·Granted Jan 28, 2020·7 cites·16 claims
- 0290US8891997B2Power supply system for stopping and starting operation in accordance with input voltage and image forming apparatus including the sameCANON KK·Filed 2012·Granted Nov 18, 2014·7 cites·9 claims
- 0388US11474458B2Image forming apparatus that determines whether or not plurality of rotating bodies are in state of contactCANON KK·Filed 2021·Granted Oct 18, 2022·2 cites·8 claims
- 0477US9274490B2Power supply apparatus and image forming apparatusCANON KK·Filed 2014·Granted Mar 1, 2016·5 cites·16 claims
- 0568US2025251681A1Image forming apparatusCANON KK·Filed 2025·Application pending·0 cites
- 0660US11722606B2Image forming apparatusCANON KK·Filed 2022·Granted Aug 8, 2023·0 cites·8 claims
- 0758US11489974B2Image forming apparatusCANON KK·Filed 2021·Granted Nov 1, 2022·0 cites·13 claims
- 0853US10459361B2Image forming apparatus with voltage adjustment memberCANON KK·Filed 2017·Granted Oct 29, 2019·0 cites·24 claims
- 0951US6183713B1Method for producing nitrogen trifluoride by gas-solid reactionCENTRAL GLASS CO LTD·Filed 1999·Granted Feb 6, 2001·15 cites·15 claims
- 1050US11258361B2Voltage detection apparatus and image forming apparatusCANON KK·Filed 2020·Granted Feb 22, 2022·0 cites·23 claims
- 1147US11112735B2Image forming apparatusCANON KK·Filed 2019·Granted Sep 7, 2021·0 cites·22 claims
- 1243US9300216B2Switching power supply and image forming apparatus equipped with switching power supplyCANON KK·Filed 2013·Granted Mar 29, 2016·0 cites·8 claims
- 1337US2013064566A1Power supply apparatus and image forming apparatusKOJIMA KEIZO·Filed 2012·Application pending·0 cites
- 1432US2016036335A1Rectifying and smoothing circuit, power supply device and image forming apparatusCANON KK·Filed 2015·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →