Inventor · disambiguated record
Shigeki Nakajima
Also filed as: NAKAJIMA SHIGEKI
39 granted patents·3 pending applications·857 citations·filing 1989–2022
98Inventor score
Files withOKI DATA KK17OKI ELECTRIC IND CO LTD15NEC CORP4TOYO SYSTEM CO LTD3MITSUBISHI ELECTRIC CORP1
Top patents by PatentIndex Score
42 records- 0197US5419544APaper cassette and paper cassette insertion mechanismOKI ELECTRIC IND CO LTD·Filed 1994·Granted May 30, 1995·72 cites·21 claims
- 0296US5235389AReplaceable toner cartridge with internal stirring member, and electrophotographic printer employing the sameOKI ELECTRIC IND CO LTD·Filed 1991·Granted Aug 10, 1993·92 cites·8 claims
- 0394US6363233B1Compact toner cartridge with fresh and waste toner chambersOKI DATA KK·Filed 2000·Granted Mar 26, 2002·51 cites·31 claims
- 0494US5722019AToner cartridge and drum cartridge for receiving the toner cartridge thereinOKI DATA KK·Filed 1996·Granted Feb 24, 1998·56 cites·18 claims
- 0592US6496671B2Toner cartridge with locking toner discharge openingOKI DATA KK·Filed 2000·Granted Dec 17, 2002·41 cites·30 claims
- 0689US5264900ADeveloping device including toner hopper and toner cartridge stirring portionsOKI ELECTRIC IND CO LTD·Filed 1992·Granted Nov 23, 1993·38 cites·26 claims
- 0787US5956556AToner recycling method and mechanism employing a belt conveyorOKI DATA KK·Filed 1998·Granted Sep 21, 1999·36 cites·28 claims
- 0886US6112037AColor image forming apparatus having a controller for setting printing speeds in dependence on a detected number of colors in an image signalOKI DATA KK·Filed 1999·Granted Aug 29, 2000·37 cites·9 claims
- 0982US6061537AElectrophotographic printerOKI DATA KK·Filed 1998·Granted May 9, 2000·31 cites·8 claims
- 1081US5975518APaper feeding mechanismOKI DATA KK·Filed 1997·Granted Nov 2, 1999·30 cites·9 claims
- 1179US5216462AToner residual amount detecting mechanismOKI ELECTRIC IND CO LTD·Filed 1992·Granted Jun 1, 1993·48 cites·6 claims
- 1279USD321716SToner cartridgeOKI ELECTRIC IND CO LTD·Filed 1989·Granted Nov 19, 1991·17 cites·1 claims
- 1377US6151472AToner cartridge and drum cartridge for receiving the toner cartridge thereinOKI DATA KK·Filed 1999·Granted Nov 21, 2000·20 cites·6 claims
- 1474US5737664AOverheating prevention device for a fixing unitOKI ELECTRIC IND CO LTD·Filed 1995·Granted Apr 7, 1998·25 cites·24 claims
- 1574USD332962SImage drum cartridgeOKI ELECTRIC IND CO LTD·Filed 1989·Granted Feb 2, 1993·14 cites·1 claims
- 1673US6882811B2Image drum cartridge and developing unit having a movable developing rollerOKI DATA KK·Filed 2003·Granted Apr 19, 2005·13 cites·23 claims
- 1773US4905028AElectrophotographic printerOKI ELECTRIC IND CO LTD·Filed 1989·Granted Feb 27, 1990·20 cites·6 claims
- 1869US5289249AElectrophotographic printer having a gravity driven toner recycling unitOKI ELECTRIC IND CO LTD·Filed 1992·Granted Feb 22, 1994·17 cites·5 claims
- 1968US6134410AToner cartridge and drum cartridge for receiving the toner cartridge thereinFiled 1998·Granted Oct 17, 2000·28 cites·10 claims
- 2066USRE38978EToner transporting method and mechanism employing a belt conveyorOKI DATA KK·Filed 2001·Granted Feb 14, 2006·8 cites·42 claims
- 2166US5280324AToner cartridgeOKI ELECTRIC IND CO LTD·Filed 1991·Granted Jan 18, 1994·15 cites·17 claims
- 2266US5132734ADeveloping apparatusOKI ELECTRIC IND CO LTD·Filed 1990·Granted Jul 21, 1992·16 cites·12 claims
- 2365USD356815SToner cartridgeOKI ELECTRIC IND CO LTD·Filed 1993·Granted Mar 28, 1995·11 cites·1 claims
- 2464US5030373ASurface-treating agents for copper and copper alloyTOKAI ELECTRO CHEMICAL CO·Filed 1990·Granted Jul 9, 1991·17 cites·3 claims
- 2562US9112412B2Full-bridge power converterTOYO SYSTEM CO LTD·Filed 2013·Granted Aug 18, 2015·2 cites·2 claims
- 2662US6021292AToner cartridge and toner collecting mechanismOKI DATA KK·Filed 1999·Granted Feb 1, 2000·15 cites·13 claims
- 2762USD354980SImage drum cartridgeOKI ELECTRIC IND CO LTD·Filed 1993·Granted Jan 31, 1995·10 cites·1 claims
- 2858USD450344SImage drum cartridgeOKI DATA KK·Filed 2000·Granted Nov 13, 2001·10 cites·1 claims
- 2956USD450752SToner cartridgeOKI DATA KK·Filed 2000·Granted Nov 20, 2001·9 cites·1 claims
- 3055USD389860SToner cartridgeOKI DATA KK·Filed 1996·Granted Jan 27, 1998·8 cites·1 claims
- 3153US2002176950A1Method of manufacturing laminate and grommet used for the methodNEC CORP·Filed 2002·Application pending·0 cites
- 3252US5983042AColor image forming apparatus having a printing mechanism selectively movable to operative and non-operative positionsOKI DATA KK·Filed 1997·Granted Nov 9, 1999·9 cites·12 claims
- 3351US12449480B2Battery test device and battery charge testing methodTOYO SYSTEM CO LTD·Filed 2022·Granted Oct 21, 2025·0 cites·5 claims
- 3451US5307134AElectrophotographic apparatusOKI ELECTRIC IND CO LTD·Filed 1992·Granted Apr 26, 1994·9 cites·8 claims
- 3548USD451539SToner cartridgeOKI DATA KK·Filed 2000·Granted Dec 4, 2001·6 cites·1 claims
- 3645USD462379SImage drum cartridgeOKI DATA KK·Filed 2000·Granted Sep 3, 2002·5 cites·1 claims
- 3744US6120670AMethod of fabricating a multi-layered printed wiring boardNEC CORP·Filed 1998·Granted Sep 19, 2000·10 cites·30 claims
- 3843US5184177AElectrophotographic printing apparatusOKI ELECTRIC IND CO LTD·Filed 1991·Granted Feb 2, 1993·6 cites·6 claims
- 3940US2001023002A1Method of manufacturing laminate and grommet used for the methodNEC CORP·Filed 2001·Application pending·0 cites
- 4040US2014133206A1Full-bridge power converterTOYO SYSTEM CO LTD·Filed 2013·Application pending·0 cites
- 4137US5963815AMethod for forming a surface-roughened conductive film on a semiconductor waferMITSUBISHI ELECTRIC CORP·Filed 1998·Granted Oct 5, 1999·5 cites·6 claims
- 4230US6290802B1Method of manufacturing laminate and grommet used for the methodNEC CORP·Filed 1999·Granted Sep 18, 2001·0 cites·7 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →