Inventor · disambiguated record
Naoyuki Ishikawa
Also filed as: ISHIKAWA NAOYUKI
55 granted patents·5 pending applications·144 citations·filing 2010–2025
98Inventor score
Top patents by PatentIndex Score
60 records- 0195US9091908B2Image projection apparatusYAMADA MASAMICHI·Filed 2012·Granted Jul 28, 2015·11 cites·5 claims
- 0295US8985786B2Image projection apparatusFUJIOKA TETSUYA·Filed 2012·Granted Mar 24, 2015·14 cites·6 claims
- 0392US8424859B2Creasing apparatus and image forming systemISHIKAWA NAOYUKI·Filed 2011·Granted Apr 23, 2013·10 cites·12 claims
- 0491US9010940B2Image projection apparatusRICOH CO LTD·Filed 2014·Granted Apr 21, 2015·6 cites·20 claims
- 0589US8413974B2Creasing device and image forming systemSHIBASAKI YUUSUKE·Filed 2011·Granted Apr 9, 2013·5 cites·8 claims
- 0688US8387964B2Creasing device and image forming systemSAITO TAKASHI·Filed 2011·Granted Mar 5, 2013·7 cites·12 claims
- 0787US9004697B2Image projection apparatusRICOH CO LTD·Filed 2014·Granted Apr 14, 2015·4 cites·9 claims
- 0887US8465012B2Creasing device and image forming systemISHIKAWA NAOYUKI·Filed 2011·Granted Jun 18, 2013·7 cites·10 claims
- 0987US8419003B2Creasing device and image forming systemKOJIMA HIDETOSHI·Filed 2011·Granted Apr 16, 2013·7 cites·7 claims
- 1085US8882277B2Image projection apparatusFUJIOKA TETSUYA·Filed 2012·Granted Nov 11, 2014·5 cites·11 claims
- 1185US8162305B2Sheet processing system, sheet-supply control method, and computer program productHATTORI HITOSHI·Filed 2010·Granted Apr 24, 2012·6 cites·11 claims
- 1284US9052580B2Outer housing for an image projection apparatusFUJIOKA TETSUYA·Filed 2012·Granted Jun 9, 2015·5 cites·6 claims
- 1383US9423676B2Lighting unit and image projectorTSUCHIYA SATOSHI·Filed 2014·Granted Aug 23, 2016·4 cites·5 claims
- 1483US9110360B2Image projection apparatusMIKUTSU YASUNARI·Filed 2013·Granted Aug 18, 2015·5 cites·2 claims
- 1583US8528891B2Creasing device and image forming systemAIBA GO·Filed 2011·Granted Sep 10, 2013·7 cites·4 claims
- 1682US8480069B2Sheet processing apparatus and image forming systemSHIBASAKI YUUSUKE·Filed 2011·Granted Jul 9, 2013·5 cites·9 claims
- 1781US8490957B2Creasing apparatus and image forming systemNAGASAKO SHUUYA·Filed 2011·Granted Jul 23, 2013·6 cites·13 claims
- 1881US8322701B2Image forming apparatusHATTORI HITOSHI·Filed 2010·Granted Dec 4, 2012·6 cites·7 claims
- 1980US9010939B2Image projection apparatusFUJIOKA TETSUYA·Filed 2012·Granted Apr 21, 2015·3 cites·8 claims
- 2078US9423677B2Cooling structure, image projection apparatus, electronic device, and cooling deviceMIKAWA AKIHISA·Filed 2014·Granted Aug 23, 2016·3 cites·8 claims
- 2175US9291883B2Image projection apparatusRICOH CO LTD·Filed 2015·Granted Mar 22, 2016·1 cites·7 claims
- 2275US9004696B1Image projection apparatusMIKAWA AKIHISA·Filed 2014·Granted Apr 14, 2015·2 cites·22 claims
- 2374US9329463B2Image projection apparatusRICOH CO LTD·Filed 2015·Granted May 3, 2016·1 cites·28 claims
- 2474US9075297B2Image projection apparatusRICOH CO LTD·Filed 2014·Granted Jul 7, 2015·1 cites·21 claims
- 2573US9244247B2Auto-focus device, projection lens device, and image projection apparatusTSUCHIYA SATOSHI·Filed 2013·Granted Jan 26, 2016·2 cites·8 claims
- 2668US8413976B2Image forming system, sheet finisher, and folding methodHATTORI HITOSHI·Filed 2011·Granted Apr 9, 2013·2 cites·10 claims
- 2767US10496221B2Position detection device, image display device and image display systemRICOH CO LTD·Filed 2018·Granted Dec 3, 2019·1 cites·15 claims
- 2867US8333371B2Creasing device and image forming systemKIKKAWA NAOHIRO·Filed 2010·Granted Dec 18, 2012·2 cites·8 claims
- 2966US9625797B2Projection optical device and image projection apparatusTSUCHIYA SATOSHI·Filed 2014·Granted Apr 18, 2017·1 cites·10 claims
- 3066US9411216B2Projector with intake ducts provided in a case thereofYAMADA MASAMICHI·Filed 2014·Granted Aug 9, 2016·1 cites·7 claims
- 3165US9898101B2Input device and electronic information board system with a movable object movable in a slant directionISHIKAWA NAOYUKI·Filed 2015·Granted Feb 20, 2018·1 cites·9 claims
- 3265US9033514B2Image projection apparatusRICOH CO LTD·Filed 2013·Granted May 19, 2015·1 cites·12 claims
- 3362US10012893B2Image projection apparatusRICOH CO LTD·Filed 2017·Granted Jul 3, 2018·0 cites·2 claims
- 3462US9016868B2Image projection apparatusKANAI HIDEO·Filed 2013·Granted Apr 28, 2015·1 cites·5 claims
- 3562US2025348158A1Writing device, display device, and communication systemISHIKAWA NAOYUKI·Filed 2025·Application pending·0 cites
- 3660US9671681B2Image projection apparatusRICOH CO LTD·Filed 2016·Granted Jun 6, 2017·0 cites·10 claims
- 3758US8998425B2Image projection apparatusFUJIOKA TETSUYA·Filed 2012·Granted Apr 7, 2015·0 cites·9 claims
- 3857US10180759B2Coordinate detecting apparatus, system, and coordinate detecting methodYAMAMOTO SEIKO·Filed 2016·Granted Jan 15, 2019·1 cites·15 claims
- 3957US9304381B2Image projection apparatusRICOH CO LTD·Filed 2015·Granted Apr 5, 2016·0 cites·6 claims
- 4056US9086615B2Image projection apparatusISHIKAWA NAOYUKI·Filed 2012·Granted Jul 21, 2015·0 cites·6 claims
- 4154US9436070B2Image Projection apparatusMIKAWA AKIHISA·Filed 2015·Granted Sep 6, 2016·0 cites·4 claims
- 4254US9429828B2Image projection apparatusRICOH CO LTD·Filed 2015·Granted Aug 30, 2016·0 cites·4 claims
- 4354US9104093B2Illumination optical system and image projection deviceFUJIOKA TETSUYA·Filed 2013·Granted Aug 11, 2015·0 cites·6 claims
- 4453US9645478B2Cooling device, image projection apparatus, and electronic apparatusMIKAWA AKIHISA·Filed 2014·Granted May 9, 2017·0 cites·6 claims
- 4553US9390871B2Switch mechanism and electronic deviceISHIKAWA NAOYUKI·Filed 2014·Granted Jul 12, 2016·0 cites·6 claims
- 4653US9274409B2Image projection apparatusFUJIOKA TETSUYA·Filed 2015·Granted Mar 1, 2016·0 cites·10 claims
- 4753US9128359B2Electronic device and image projection apparatusYAMADA MASAMICHI·Filed 2013·Granted Sep 8, 2015·0 cites·8 claims
- 4852US9525840B2Image projection apparatus and circuit-board retaining structureYAMADA MASAMICHI·Filed 2014·Granted Dec 20, 2016·0 cites·5 claims
- 4951US9606426B2Duct cover for an image projection apparatusISHIKAWA NAOYUKI·Filed 2014·Granted Mar 28, 2017·0 cites·16 claims
- 5051US9348201B2Image projection apparatusISHIKAWA NAOYUKI·Filed 2015·Granted May 24, 2016·0 cites·16 claims
Showing the top 50 of 60 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →