Inventor · disambiguated record
Tadashi Iwamatsu
Also filed as: IWAMATSU TADASHI
68 granted patents·10 pending applications·547 citations·filing 1988–2023
98Inventor score
Top patents by PatentIndex Score
78 records- 0195US5262908ATracking control device for magnetic recording/reproducing apparatusSHARP KK·Filed 1991·Granted Nov 16, 1993·92 cites·20 claims
- 0293US5196969AHead positioning system for serpentine magnetic recording/reproducing systemSHARP KK·Filed 1990·Granted Mar 23, 1993·69 cites·12 claims
- 0391US6035171ADeveloping apparatus having means for removing electric charge of tonerSHARP KK·Filed 1999·Granted Mar 7, 2000·57 cites·23 claims
- 0489US8110971B2Light emitting element, light emitting device, image display device, method of driving light emitting element, and method of producing light emitting elementHIRAKAWA HIROYUKI·Filed 2010·Granted Feb 7, 2012·15 cites·17 claims
- 0587US6049689ADeveloping apparatus with vibration absorbtion deviceSHARP KK·Filed 1998·Granted Apr 11, 2000·42 cites·14 claims
- 0684US7970318B2Charging device and image forming device using sameSHARP KK·Filed 2006·Granted Jun 28, 2011·9 cites·20 claims
- 0778US6064847ADeveloping deviceSHARP KK·Filed 1999·Granted May 16, 2000·28 cites·23 claims
- 0877US8293446B2Resin-coated carrier method of manufacturing the same, two-component developer including resin-coated carrier, developing device and image forming apparatusWADA OSAMU·Filed 2010·Granted Oct 23, 2012·2 cites·9 claims
- 0977US8164247B2Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, and electron-beam curing deviceHIRAKAWA HIROYUKI·Filed 2010·Granted Apr 24, 2012·4 cites·23 claims
- 1076US7477442B2Display apparatus and method for producing the sameSHARP KK·Filed 2004·Granted Jan 13, 2009·17 cites·24 claims
- 1176US6858369B1Toner and manufacturing method thereofSHARP KK·Filed 2003·Granted Feb 22, 2005·15 cites·28 claims
- 1274US10782265B2Analysis apparatusSHARP KK·Filed 2019·Granted Sep 22, 2020·1 cites·15 claims
- 1374US8547007B2Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, electron-beam curing device, and method for producing electron emitting elementNAGAOKA AYAE·Filed 2010·Granted Oct 1, 2013·2 cites·41 claims
- 1473US8299700B2Electron emitting element having an electron acceleration layer, electron emitting device, light emitting device, image display device, cooling device, and charging deviceIWAMATSU TADASHI·Filed 2010·Granted Oct 30, 2012·4 cites·23 claims
- 1573US6239824B1Apparatus and method for forming image with superior image reproducibilitySHARP KK·Filed 2000·Granted May 29, 2001·12 cites·6 claims
- 1672US7129965B2Exposure device and image forming deviceSHARP KK·Filed 2003·Granted Oct 31, 2006·13 cites·13 claims
- 1768US6064463ADeveloping apparatus using one-component tonerSHARP KK·Filed 1998·Granted May 16, 2000·19 cites·19 claims
- 1868US5978635AImage developing device using a one-component tonerSHARP KK·Filed 1999·Granted Nov 2, 1999·19 cites·9 claims
- 1966US8735041B2Method for producing resin-coated carrier, resin-coated carrier, two-component developer, developing device, image forming apparatus and image forming methodKAMOTO TAKANORI·Filed 2010·Granted May 27, 2014·1 cites·3 claims
- 2066US6323888B1Image forming apparatusSHARP KK·Filed 2000·Granted Nov 27, 2001·10 cites·11 claims
- 2164US8616931B2Electron emitting element, electron emitting device, light emitting device, image display device, air blowing device, cooling device, charging device, image forming apparatus, electron-beam curing device, and method for producing electron emitting elementNAGAOKA AYAE·Filed 2013·Granted Dec 31, 2013·1 cites·7 claims
- 2264US6714225B2Image formation apparatus and image formation methodSHARP KK·Filed 2002·Granted Mar 30, 2004·6 cites·10 claims
- 2364US6596454B2Toner and manufacturing method thereofSHARP KK·Filed 2001·Granted Jul 22, 2003·9 cites·18 claims
- 2463US11205555B2Electron emission element and method for manufacturing sameSHARP KK·Filed 2020·Granted Dec 21, 2021·0 cites·6 claims
- 2562US8401430B2Electron emitting element for accelerating and emitting electrons, and use of electron emitting elementKANDA HIROFUMI·Filed 2008·Granted Mar 19, 2013·2 cites·26 claims
- 2661US7885572B2Corona discharge device, photoreceptor charger, and method for making discharge product removing memberSHARP KK·Filed 2007·Granted Feb 8, 2011·2 cites·18 claims
- 2761US7809310B2Image forming apparatusSHARP KK·Filed 2005·Granted Oct 5, 2010·2 cites·7 claims
- 2860US8741525B2Resin coated carrier, two-component developer, developing device and image forming apparatusWADA OSAMU·Filed 2009·Granted Jun 3, 2014·2 cites·8 claims
- 2959US11988634B2Ion generation apparatus and ion mobility analysis apparatusSHARP KK·Filed 2021·Granted May 21, 2024·0 cites·17 claims
- 3059US7160365B2Ion generating apparatus, air conditioning apparatus, and charging apparatusSHARP KK·Filed 2004·Granted Jan 9, 2007·6 cites·12 claims
- 3159US6417876B1Apparatus and method for forming image with high image resolution from images having various dot densitiesSHARP KK·Filed 2000·Granted Jul 9, 2002·4 cites·8 claims
- 3259US5680232AHolographic scanner including a rotary hologram disk between a front hologram and a rear hologramSHARP KK·Filed 1995·Granted Oct 21, 1997·20 cites·10 claims
- 3358US12504399B2IMS analyzerSHARP KK·Filed 2023·Granted Dec 23, 2025·0 cites·8 claims
- 3458US11971394B2Electron capture detectorSHARP KK·Filed 2019·Granted Apr 30, 2024·0 cites·12 claims
- 3558US6433803B2Exposure apparatus for image formation and image formation methodSHARP KK·Filed 2001·Granted Aug 13, 2002·3 cites·14 claims
- 3657US11587777B2Analysis deviceSHARP KK·Filed 2021·Granted Feb 21, 2023·0 cites·10 claims
- 3754US7530279B2Sampler for sampling charged particles, and apparatus for measuring charge distribution of the charged particlesSHARP KK·Filed 2006·Granted May 12, 2009·1 cites·11 claims
- 3853US2022223400A1Ionizer and ims analyzerSHARP KK·Filed 2022·Application pending·0 cites
- 3952US10763068B2Electron emission element and method for sameSHARP KK·Filed 2018·Granted Sep 1, 2020·0 cites·13 claims
- 4051US11551902B2Electron emitting elementSHARP KK·Filed 2021·Granted Jan 10, 2023·0 cites·11 claims
- 4151US11397165B2AnalyzerSHARP KK·Filed 2020·Granted Jul 26, 2022·0 cites·13 claims
- 4251US9307627B2Electron emitting device with electron acceleration layer containing conductive microparticlesSHARP KK·Filed 2014·Granted Apr 5, 2016·0 cites·3 claims
- 4351US2022061346A1Fermentation management methodSHARP KK·Filed 2021·Application pending·0 cites
- 4450US10727021B2Electron emission element, electrification apparatus, and image forming apparatusSHARP KK·Filed 2017·Granted Jul 28, 2020·0 cites·10 claims
- 4550US6298206B1Electrophotographic developing apparatusSHARP KK·Filed 2000·Granted Oct 2, 2001·4 cites·7 claims
- 4650US6154627ADeveloping apparatus using one-component tonerSHARP KK·Filed 1999·Granted Nov 28, 2000·9 cites·7 claims
- 4750US6087056ADeveloping method by flying tonerSHARP KK·Filed 1999·Granted Jul 11, 2000·9 cites·16 claims
- 4849US11485950B2Cell stimulation device, cell culture device, and cell stimulation methodSHARP KK·Filed 2018·Granted Nov 1, 2022·0 cites·10 claims
- 4949US10643815B2Electron emission device, method for manufacturing same, and method for manufacturing electronic deviceSHARP KK·Filed 2018·Granted May 5, 2020·0 cites·14 claims
- 5048US7307379B2Electron emitting element and image forming apparatus employing itSHARP KK·Filed 2004·Granted Dec 11, 2007·3 cites·13 claims
Showing the top 50 of 78 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Tadashi Iwamatsu 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 →