Inventor · disambiguated record
Kazuhiko Ohtsu
Also filed as: OHTSU KAZUHIKO
37 granted patents·34 pending applications·213 citations·filing 1999–2024
97Inventor score
Top patents by PatentIndex Score
71 records- 0196US9827778B2Ink circulation device and ink ejection deviceTOSHIBA TEC KK·Filed 2016·Granted Nov 28, 2017·9 cites·12 claims
- 0296US6959986B2Liquid ink and recording apparatusTOSHIBA KK·Filed 2003·Granted Nov 1, 2005·54 cites·23 claims
- 0395US9694595B2Liquid circulation device, liquid discharge device and control method for the sameTOSHIBA TEC KK·Filed 2016·Granted Jul 4, 2017·7 cites·6 claims
- 0495US7500745B2Liquid ink and recording apparatusTOSHIBA TEC KK·Filed 2006·Granted Mar 10, 2009·16 cites·16 claims
- 0594US7803851B2Inkjet inkTOSHIBA TEC KK·Filed 2006·Granted Sep 28, 2010·20 cites·18 claims
- 0693US10022978B2Ink circulation device and ink jet recording apparatusTOSHIBA TEC KK·Filed 2017·Granted Jul 17, 2018·4 cites·18 claims
- 0793US9649849B2Ink circulation device and ink jet recording apparatusTOSHIBA TEC KK·Filed 2016·Granted May 16, 2017·4 cites·20 claims
- 0893US7125112B2Liquid ink and recording apparatusTOSHIBA KK·Filed 2005·Granted Oct 24, 2006·12 cites·2 claims
- 0992US7108367B2Liquid ink and recording apparatusTOSHIBA KK·Filed 2005·Granted Sep 19, 2006·10 cites·5 claims
- 1088US9987853B2Liquid circulation device, liquid discharge device and liquid discharge methodTOSHIBA TEC KK·Filed 2016·Granted Jun 5, 2018·2 cites·4 claims
- 1188US8235494B2Image forming apparatus and ejection liquid circulating methodKAIHO SATOSHI·Filed 2010·Granted Aug 7, 2012·8 cites·20 claims
- 1286US7473720B2Photosensitive inkjet inkTOSHIBA TEC KK·Filed 2006·Granted Jan 6, 2009·6 cites·11 claims
- 1385US9878535B2Ink circulation device and printerTOSHIBA TEC KK·Filed 2016·Granted Jan 30, 2018·2 cites·11 claims
- 1484US7858670B2Photosensitive inkjet inkTOSHIBA TEC KK·Filed 2007·Granted Dec 28, 2010·6 cites·10 claims
- 1582US7387380B2Liquid ink and recording apparatusTOSHIBA TEC KK·Filed 2006·Granted Jun 17, 2008·4 cites·4 claims
- 1681US7754785B2Pigment dispersion, precursor of ink for UV-curing type ink-jet recording, method of ink-jet recording, printed matter, and method of manufacturing pigment dispersionTOSHIBA TEC KK·Filed 2008·Granted Jul 13, 2010·3 cites·11 claims
- 1781US7404852B2Inkjet ink, inkjet recording method, method of evaluating inkjet ink, and method of manufacturing inkjet inkTOSHIBA TEC KK·Filed 2006·Granted Jul 29, 2008·4 cites·5 claims
- 1879US10160223B2Ink circulation device for ink jet headTOSHIBA TEC KK·Filed 2017·Granted Dec 25, 2018·1 cites·20 claims
- 1978US10065428B2Liquid circulation module and liquid ejection apparatusTOSHIBA TEC KK·Filed 2017·Granted Sep 4, 2018·1 cites·20 claims
- 2077US7896484B2Ink jet recording apparatusTOSHIBA KK·Filed 2008·Granted Mar 1, 2011·2 cites·13 claims
- 2172USRE46252EInkjet recording apparatus and recording method by the sameTOSHIBA KK·Filed 2014·Granted Dec 27, 2016·1 cites·20 claims
- 2272US7417074B2Ink for ink jet and ink jet recording apparatusTOSHIBA TEC KK·Filed 2004·Granted Aug 26, 2008·7 cites·17 claims
- 2372US7375145B2Inkjet inkTOSHIBA TEC KK·Filed 2004·Granted May 20, 2008·9 cites·11 claims
- 2469US7579390B2Inkjet ink composition and printed matters created using inkjet ink compositionTOSHIBA TEC KK·Filed 2005·Granted Aug 25, 2009·2 cites·11 claims
- 2569US7425525B2Washing solution for inkjet printer head and washing method using the solutionTOSHIBA TEC KK·Filed 2005·Granted Sep 16, 2008·1 cites·18 claims
- 2668US10343414B2Liquid circulation device, liquid discharge device and liquid discharge methodTOSHIBA TEC KK·Filed 2018·Granted Jul 9, 2019·0 cites·6 claims
- 2767US7439281B2Pigment dispersion, precursor of ink for UV-curing type ink-jet recording, method of ink-jet recording, printed matter, and method of manufacturing pigment dispersionTOSHIBA TEC KK·Filed 2004·Granted Oct 21, 2008·6 cites·5 claims
- 2866US10239325B2Liquid circulation device, liquid discharge device and liquid discharge methodTOSHIBA TEC KK·Filed 2017·Granted Mar 26, 2019·0 cites·14 claims
- 2964US2024265369A1Checkout apparatus and checkout methodTOSHIBA TEC KK·Filed 2024·Application pending·0 cites
- 3063USRE46980EInkjet recording apparatus and recording method by the same usable with recycled paperTOSHIBA KK·Filed 2016·Granted Aug 7, 2018·0 cites·37 claims
- 3162US10611169B2Diaphragm pump, liquid circulation module and liquid discharge apparatusTOSHIBA TEC KK·Filed 2018·Granted Apr 7, 2020·0 cites·20 claims
- 3259US2011122177A1Ink Jet Recording ApparatusTOSHIBA KK·Filed 2011·Application pending·0 cites
- 3355US12389177B2Information processing device and information processing programTOSHIBA TEC KK·Filed 2022·Granted Aug 12, 2025·0 cites·20 claims
- 3453US8459770B2Inkjet recording apparatus and recording method by the same usable with recycled paperKUBOTA ATSUSHI·Filed 2011·Granted Jun 11, 2013·0 cites·18 claims
- 3552US9033441B2Ink-jet printer and control method for ink-jet printerTOSHIBA TEC KK·Filed 2013·Granted May 19, 2015·0 cites·14 claims
- 3651US6312081B1Ink jet recording methodTOSHIBA TEC KK·Filed 1999·Granted Nov 6, 2001·11 cites·4 claims
- 3751US2009085998A1Inkjet recording deviceTOSHIBA KK·Filed 2008·Application pending·0 cites
- 3850US7285581B2Processed pigments, pigment-dispersed solution, ink for ink jet, manufacturing method of processed pigments and manufacturing method of pigment-dispersed solutionTOSHIBA TEC KK·Filed 2004·Granted Oct 23, 2007·1 cites·11 claims
- 3949US2011279512A1Inkjet recording deviceKUBOTA ATSUSHI·Filed 2011·Application pending·0 cites
- 4048US7926932B2Image forming apparatus and printing control methodTOSHIBA KK·Filed 2008·Granted Apr 19, 2011·0 cites·20 claims
- 4146US2010171804A1Image recording apparatusTOSHIBA KK·Filed 2009·Application pending·0 cites
- 4246US2006189716A1Dispersion, inkjet ink, method of manufacturing dispersion, method of manufacturing inkjet ink, and printed matterUSHIROGOUCHI TORU·Filed 2006·Application pending·0 cites
- 4345US2009219369A1Ink jet recording apparatusTOSHIBA KK·Filed 2009·Application pending·0 cites
- 4445US2009315933A1Ink jet recording apparatusTOSHIBA KK·Filed 2009·Application pending·0 cites
- 4545US2009244233A1Ink jet recording apparatusTOSHIBA KK·Filed 2009·Application pending·0 cites
- 4645US2009219370A1Ink jet recording apparatusTOSHIBA KK·Filed 2009·Application pending·0 cites
- 4745US2009244147A1Ink jet recording apparatusTOSHIBA KK·Filed 2009·Application pending·0 cites
- 4845US2009315937A1Ink jet recording apparatusTOSHIBA KK·Filed 2009·Application pending·0 cites
- 4944US2009085947A1Inkjet recording device, image forming method and recording deviceTOSHIBA KK·Filed 2008·Application pending·0 cites
- 5044US2011273508A1Aqueous inkjet inkTOSHIBA TEC KK·Filed 2011·Application pending·0 cites
Showing the top 50 of 71 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Kazuhiko Ohtsu files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →