Inventor · disambiguated record
Ryuji Tsukamoto
Also filed as: TSUKAMOTO RYUJI
20 granted patents·3 pending applications·35 citations·filing 2006–2023
91Inventor score
Top patents by PatentIndex Score
23 records- 0185US8277008B2Method and apparatus for driving inkjet headTSUKAMOTO RYUJI·Filed 2010·Granted Oct 2, 2012·5 cites·16 claims
- 0283US8613489B2Inkjet ejection apparatus, inkjet ejection method, and inkjet recording apparatusTSUKAMOTO RYUJI·Filed 2011·Granted Dec 24, 2013·4 cites·18 claims
- 0381US8801128B2Device and method for driving liquid discharge head, liquid discharge apparatus, and ink-jet apparatusFUJIFILM CORP·Filed 2012·Granted Aug 12, 2014·3 cites·20 claims
- 0479US8252365B2Method of manufacturing piezoelectric element and method of manufacturing liquid ejection headTSUKAMOTO RYUJI·Filed 2008·Granted Aug 28, 2012·6 cites·2 claims
- 0577US7887163B2Piezoelectric actuator, liquid ejection head, image forming apparatus, and method of manufacturing piezoelectric actuatorFUJIFILM CORP·Filed 2008·Granted Feb 15, 2011·5 cites·4 claims
- 0676US7772747B2Process for producing a piezoelectric film, film forming apparatus, and piezoelectric filmFUJIFILM CORP·Filed 2009·Granted Aug 10, 2010·2 cites·7 claims
- 0769US7439659B2Piezoelectric actuator, droplet ejection apparatus, and manufacturing method thereofFUJIFILM CORP·Filed 2006·Granted Oct 21, 2008·3 cites·9 claims
- 0865US12454128B2Drive controller, head unit, and liquid discharge apparatusKINOKUNI TAKASHI·Filed 2023·Granted Oct 28, 2025·0 cites·12 claims
- 0965US8177336B2Method of driving piezoelectric actuator and method of driving liquid ejection headTSUKAMOTO RYUJI·Filed 2009·Granted May 15, 2012·2 cites·7 claims
- 1062US12343992B2Liquid discharge head, liquid discharge device, and liquid discharge apparatusSHINGYOH MASAYA·Filed 2022·Granted Jul 1, 2025·0 cites·19 claims
- 1162US8119192B2Method of manufacturing piezoelectric element and method of manufacturing liquid ejection headTSUKAMOTO RYUJI·Filed 2008·Granted Feb 21, 2012·2 cites·9 claims
- 1262US7765659B2Method of manufacturing a liquid ejection headFUJIFILM CORP·Filed 2006·Granted Aug 3, 2010·2 cites·2 claims
- 1355US8474116B2Method of manufacturing piezoelectric element and method of manufacturing liquid ejection headTSUKAMOTO RYUJI·Filed 2009·Granted Jul 2, 2013·1 cites·6 claims
- 1454US10675865B2Liquid discharge apparatusTSUKAMOTO RYUJI·Filed 2019·Granted Jun 9, 2020·0 cites·2 claims
- 1550US2025162317A1Liquid discharge head, head unit, and liquid discharge apparatusTSUKAMOTO RYUJI·Filed 2023·Application pending·0 cites
- 1648US10029465B2Liquid discharge head, liquid discharge device, and liquid discharge apparatusTSUKAMOTO RYUJI·Filed 2017·Granted Jul 24, 2018·0 cites·13 claims
- 1747US8955952B2Ink circulation apparatus, ink circulation method and inkjet recording apparatusFUJIFILM CORP·Filed 2014·Granted Feb 17, 2015·0 cites·14 claims
- 1846US8955949B2Ink circulation apparatus, ink circulation method and inkjet recording apparatusFUJIFILM CORP·Filed 2014·Granted Feb 17, 2015·0 cites·14 claims
- 1946US8382257B2Piezoelectric actuator, method of manufacturing piezoelectric actuator, liquid ejection head, method of manufacturing liquid ejection head and image forming apparatusFUJIFILM CORP·Filed 2010·Granted Feb 26, 2013·0 cites·13 claims
- 2046US8266773B2Method of manufacturing a piezoelectric actuatorTSUKAMOTO RYUJI·Filed 2009·Granted Sep 18, 2012·0 cites·5 claims
- 2146US7963637B2Method of driving piezoelectric actuator and liquid ejection apparatusFUJIFILM CORP·Filed 2008·Granted Jun 21, 2011·0 cites·2 claims
- 2242US2009083958A1Method of manufacturing piezoelectric actuator, liquid ejection head and image forming apparatusTSUKAMOTO RYUJI·Filed 2008·Application pending·0 cites
- 2339US2007138906A1Methods of manufacturing piezoelectric actuator and liquid ejection head, piezoelectric actuator, liquid ejection head, and image forming apparatusFUJIFILM CORP·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →