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
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