Inventor · disambiguated record
Tamotsu Aruga
Also filed as: ARUGA TAMOTSU
77 granted patents·3 pending applications·1,980 citations·filing 1983–2016
99Inventor score
Top patents by PatentIndex Score
80 records- 0199US7919544B2Ink-media set, ink composition, ink cartridge, inkjet recording method, inkjet recording apparatus, and ink recorded matterRICOH CO LTD·Filed 2007·Granted Apr 5, 2011·80 cites·9 claims
- 0298US4957838AElectrophotographic photoconductor and triphenylamine compounds for use in the sameRICOH KK·Filed 1989·Granted Sep 18, 1990·79 cites·20 claims
- 0398US4737190AAqueous ink composition for ink-jet recordingRICOH KK·Filed 1985·Granted Apr 12, 1988·120 cites·8 claims
- 0498US4647310AAqueous ink composition for ink jet-recordingRICOH KK·Filed 1986·Granted Mar 3, 1987·86 cites·9 claims
- 0598US4631085AAqueous ink composition for ink-jet recordingRICOH KK·Filed 1985·Granted Dec 23, 1986·84 cites·9 claims
- 0696US8044114B2Ink for recording, and ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method using the sameRICOH CO LTD·Filed 2006·Granted Oct 25, 2011·21 cites·13 claims
- 0796US4740420ARecording medium for ink-jet printingRICOH KK·Filed 1986·Granted Apr 26, 1988·76 cites·5 claims
- 0896US4711668AAqueous ink compositionRICOH KK·Filed 1986·Granted Dec 8, 1987·93 cites·8 claims
- 0995US8727522B2Ultraviolet crosslinking ink and inkjet recording methodMAEKAWA TSUTOMU·Filed 2012·Granted May 20, 2014·19 cites·6 claims
- 1095US6558863B2Electrophotographic photoreceptor, electrophotographic image forming method and apparatus using the photoreceptorRICOH KK·Filed 2000·Granted May 6, 2003·59 cites·71 claims
- 1195US4713113AAqueous ink composition for ink-jet recordingRICOH KK·Filed 1985·Granted Dec 15, 1987·81 cites·9 claims
- 1294US8998400B2Copolymer, aqueous ink, and ink cartridgeHARADA SHIGEYUKI·Filed 2014·Granted Apr 7, 2015·9 cites·8 claims
- 1394US7950793B2Recording ink, ink cartridge, ink record, inkjet recording apparatus and inkjet recording processRICOH CO LTD·Filed 2005·Granted May 31, 2011·16 cites·25 claims
- 1494US4620876AAqueous ink for ink-jet printingRICOH KK·Filed 1985·Granted Nov 4, 1986·105 cites·8 claims
- 1593US6316577B1Electrophotographic photoconductor and aromatic polycarbonate resin for use thereinHODOGAYA CHEMICAL CO LTD·Filed 2000·Granted Nov 13, 2001·34 cites·22 claims
- 1693US4554555ARecording method by use of inksRICOH KK·Filed 1983·Granted Nov 19, 1985·63 cites·14 claims
- 1792US8632174B2Ink jet recording methodNOGUCHI SOH·Filed 2011·Granted Jan 21, 2014·11 cites·7 claims
- 1892US8328343B2Recording ink as well as ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording methodARUGA TAMOTSU·Filed 2010·Granted Dec 11, 2012·7 cites·6 claims
- 1992US7816674B2Organic thin-film transistorRICOH KK·Filed 2007·Granted Oct 19, 2010·18 cites·10 claims
- 2092US5219692AElectrophotographic photoconductors and tertiary amine compounds having condensed polycyclic group for use in the sameRICOH KK·Filed 1990·Granted Jun 15, 1993·33 cites·26 claims
- 2191US6355390B1Electrophotographic photoconductor, production process thereof, electrophotographic image forming method and apparatus, and process cartridgeRICOH KK·Filed 2000·Granted Mar 12, 2002·43 cites·33 claims
- 2291US6027846AElectrophotographic photoconductor and aromatic polycarbonate resin for use thereinRICOH KK·Filed 1996·Granted Feb 22, 2000·49 cites·7 claims
- 2391US4793860AAqueous ink compositionRICOH KK·Filed 1987·Granted Dec 27, 1988·59 cites·5 claims
- 2490US8440713B2[1]benzothieno[3,2-B][1]benzothiophene compound and method for producing the same, and organic electronic device using the sameGOTO DAISUKE·Filed 2009·Granted May 14, 2013·9 cites·6 claims
- 2590US8435339B2Ink set, ink cartridge, inkjet recording method, and inkjet recording apparatusKOYANO MASAYUKI·Filed 2008·Granted May 7, 2013·15 cites·18 claims
- 2690US4680235ARecording material for ink jet printingRICOH KK·Filed 1985·Granted Jul 14, 1987·45 cites·13 claims
- 2789US7621608B2Image forming apparatus having improved capability for maintaining ink deliveryRICOH KK·Filed 2006·Granted Nov 24, 2009·10 cites·20 claims
- 2889US5672728AMethod for preparing the pyrenylamine derivativesRICOH KK·Filed 1996·Granted Sep 30, 1997·25 cites·3 claims
- 2989US5459275APyrenylamine derivativesRICOH KK·Filed 1994·Granted Oct 17, 1995·26 cites·3 claims
- 3089US5457232APyrenylamine derivatives having unsaturated bondRICOH KK·Filed 1994·Granted Oct 10, 1995·27 cites·3 claims
- 3189US5344985AAldehyde intermediates for the preparation of pyrenylamine derivatives having unsaturated bondRICOH KK·Filed 1992·Granted Sep 6, 1994·29 cites·9 claims
- 3288US8173227B2Recording ink, ink media set, ink cartridge, ink recorded matter, inkjet recording apparatus, and inkjet recording methodMOROHOSHI NAOYA·Filed 2007·Granted May 8, 2012·9 cites·20 claims
- 3388US5599995AElectrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediateRICOH KK·Filed 1995·Granted Feb 4, 1997·25 cites·1 claims
- 3487US5576132AElectrophotographic photoconductor comprising pyrenylamine derivativeRICOH KK·Filed 1995·Granted Nov 19, 1996·23 cites·7 claims
- 3586US8815140B2Method of producing film by inkjet process, and filmARUGA TAMOTSU·Filed 2011·Granted Aug 26, 2014·4 cites·17 claims
- 3686US5587516AElectrophotographic photoconductor comprising pyrenylamine derivative, the pyrenylamine derivative, intermediate for preparation thereof, and method for preparing the pyrenylamine derivative and the intermediateRICOH KK·Filed 1995·Granted Dec 24, 1996·21 cites·1 claims
- 3785US5312707AElectrophotographic photoconductor and diamine compounds for use in the sameRICOH KK·Filed 1992·Granted May 17, 1994·35 cites·23 claims
- 3884US8740374B2Ink jet recording method, ink jet recording apparatus, and ink jet recorded matterSENO SHIN-YA·Filed 2012·Granted Jun 3, 2014·6 cites·13 claims
- 3984US5616805AMethods for preparing pyrenylamine derivatives and intermediatesRICOH KK·Filed 1995·Granted Apr 1, 1997·24 cites·2 claims
- 4083US4581071AAqueous ink for ink jet printingRICOH KK·Filed 1985·Granted Apr 8, 1986·32 cites·6 claims
- 4182US8193304B2Benzobisthiazole compound, benzobisthiazole polymer, organic film including the compound or polymer and transistor including the organic filmYAMAMOTO SATOSHI·Filed 2009·Granted Jun 5, 2012·4 cites·6 claims
- 4281US8708475B2Ultraviolet crosslinking inkjet ink, ink cartridge containing same, and image forming method and apparatus using sameHASEGAWA TOMOKO·Filed 2011·Granted Apr 29, 2014·4 cites·10 claims
- 4379US8807731B2Inkjet image forming apparatus and inkjet image forming methodTAKEUCHI NORIYASU·Filed 2011·Granted Aug 19, 2014·3 cites·8 claims
- 4477US5474868AElectrophotographic photoconductor with ligninRICOH KK·Filed 1994·Granted Dec 12, 1995·20 cites·21 claims
- 4577US5436100AElectrophotographic photoconductor and M-phenylenediamine derivatives for use in the sameRICOH KK·Filed 1994·Granted Jul 25, 1995·17 cites·45 claims
- 4677US5158850APolyether compounds and electrophotographic photoconductor comprising one polyether compoundRICOH KK·Filed 1990·Granted Oct 27, 1992·12 cites·17 claims
- 4776US6699631B2Image forming apparatus, image forming method, process cartridge, photoconductor and method of preparing photoconductorRICOH KK·Filed 2002·Granted Mar 2, 2004·16 cites·38 claims
- 4876US5604065AElectrophotographic photoconductor and triphenylamine compound for use thereinRICOH KK·Filed 1995·Granted Feb 18, 1997·21 cites·11 claims
- 4976US5059708APyrene-ring-containing olefin compound, intermediate for synthesizing the olefin compound and method of synthesizing the olefin comopundRICOH KK·Filed 1991·Granted Oct 22, 1991·14 cites·3 claims
- 5074US8556405B2Ink for recording, and ink cartridge, ink recorded matter, inkjet recording apparatus and inkjet recording method using the sameHABASHI HISASHI·Filed 2011·Granted Oct 15, 2013·2 cites·17 claims
Showing the top 50 of 80 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →