Inventor · disambiguated record
Tsuyoshi Kitahara
Also filed as: KITAHARA TSUYOSHI
85 granted patents·7 pending applications·1,732 citations·filing 1982–2019
99Inventor score
Top patents by PatentIndex Score
92 records- 0198US6328395B1Ink jet printer and ink jet printing methodSEIKO EPSON CORP·Filed 1997·Granted Dec 11, 2001·190 cites·37 claims
- 0297US5841456ATransfer printing apparatus with dispersion medium removal memberSEIKO EPSON CORP·Filed 1992·Granted Nov 24, 1998·126 cites·14 claims
- 0396US6382754B1Ink jet printing deviceSEIKO EPSON CORP·Filed 2000·Granted May 7, 2002·66 cites·66 claims
- 0495US4507986AControl system for motor vehicleNISSAN MOTOR·Filed 1982·Granted Apr 2, 1985·53 cites·11 claims
- 0593US7384126B2Liquid drop discharge head, discharge method and discharge device; electro optical device, method of manufacture thereof, and device for manufacture thereof; color filter, method of manufacture thereof, and device for manufacture thereof; and device incorporating backing, method of manufacture thereof, and device for manufacture thereofSEIKO EPSON CORP·Filed 2005·Granted Jun 10, 2008·13 cites·20 claims
- 0693US4962391AInk jet printer headSEIKO EPSON CORP·Filed 1989·Granted Oct 9, 1990·82 cites·14 claims
- 0790US5341164ASolid ink supply for ink jetSEIKO EPSON CORP·Filed 1993·Granted Aug 23, 1994·61 cites·24 claims
- 0889US7867407B2Method of manufacturing an ink-jet recording headSEIKO EPSON CORP·Filed 2007·Granted Jan 11, 2011·9 cites·3 claims
- 0988US6921148B2Liquid drop discharge head, discharge method and discharge device; electro optical device, method of manufacture thereof, and device for manufacture thereof; color filter, method of manufacture thereof, and device for manufacture thereof; and device incorporating backing, method of manufacture thereof, and device for manufacture thereofSEIKO EPSON CORP·Filed 2003·Granted Jul 26, 2005·28 cites·15 claims
- 1086US7101440B2Ejecting method and ejecting apparatusSEIKO EPSON CORP·Filed 2002·Granted Sep 5, 2006·19 cites·23 claims
- 1186US6386672B1Ink jet type recording headSEIKO EPSON CORP·Filed 1999·Granted May 14, 2002·53 cites·69 claims
- 1286US4601273AAir/fuel ratio monitoring system in IC engine using oxygen sensorNISSAN MOTOR·Filed 1984·Granted Jul 22, 1986·29 cites·8 claims
- 1385US6547373B2Ink jet type recording headSEIKO EPSON CORP·Filed 2001·Granted Apr 15, 2003·22 cites·51 claims
- 1485US6499836B1Piezoelectric ink jet recording head formed by press workingSEIKO EPSON CORP·Filed 2000·Granted Dec 31, 2002·21 cites·12 claims
- 1585US6357846B1Ink jet recording apparatus and recording method using the sameSEIKO EPSON CORP·Filed 1999·Granted Mar 19, 2002·50 cites·19 claims
- 1685US6139132AInk jet recording head with nozzle communicating hole having smaller width than pressurizing chambers in direction of array of pressurizing chambersSEIKO EPSON CORP·Filed 1996·Granted Oct 31, 2000·42 cites·29 claims
- 1785US4658790AAir/fuel ratio detecting device and control system using sameNISSAN MOTOR·Filed 1985·Granted Apr 21, 1987·29 cites·8 claims
- 1884US4601809AOxygen concentration detecting system using oxygen sensor including oxygen ion pumpNISSAN MOTOR·Filed 1985·Granted Jul 22, 1986·54 cites·19 claims
- 1983US5754204AInk jet recording headSEIKO EPSON CORP·Filed 1996·Granted May 19, 1998·44 cites·9 claims
- 2082US6408513B1Method for manufacturing a piezoelectric vibrator unitSEIKO EPSON CORP·Filed 2001·Granted Jun 25, 2002·19 cites·5 claims
- 2182US6217159B1Ink jet printing deviceSEIKO EPSON CORP·Filed 1997·Granted Apr 17, 2001·38 cites·29 claims
- 2282US5646662ARecording head of an ink-jet typeSEIKO EPSON CORP·Filed 1992·Granted Jul 8, 1997·46 cites·15 claims
- 2382US5510816AMethod and apparatus for driving ink jet recording headSEIKO EPSON CORP·Filed 1992·Granted Apr 23, 1996·45 cites·12 claims
- 2478US7305764B2Method of manufacturing an ink-jet recording headSEIKO EPSON CORP·Filed 2004·Granted Dec 11, 2007·17 cites·3 claims
- 2578US6779866B2Liquid jetting apparatus and method for driving the sameSEIKO EPSON CORP·Filed 2002·Granted Aug 24, 2004·19 cites·12 claims
- 2678US6190009B1Ink-jet recording deviceSEIKO EPSON CORP·Filed 1998·Granted Feb 20, 2001·30 cites·7 claims
- 2777US6338554B1Ink-jet recording deviceSEIKO EPSON CORP·Filed 2000·Granted Jan 15, 2002·14 cites·9 claims
- 2877US6273558B1Piezoelectric vibrator unit, manufacturing method thereof, and ink jet recording head incorporating the sameSEIKO EPSON CORP·Filed 1999·Granted Aug 14, 2001·30 cites·14 claims
- 2976US6984010B2Ink jet recording head, method of manufacturing the same method of driving the same, and ink jet recording apparatus incorporating the sameSEIKO EPSON CORP·Filed 2001·Granted Jan 10, 2006·16 cites·44 claims
- 3076US6398350B2Piezoelectric vibrator unit, liquid jet head, manufacturing method of piezoelectric vibrator unit, and manufacturing method of liquid jet headSEIKO EPSON CORP·Filed 2001·Granted Jun 4, 2002·16 cites·26 claims
- 3176US5481284APrinter having line-type ink jet recording headSEIKO EPSON CORP·Filed 1993·Granted Jan 2, 1996·36 cites·26 claims
- 3276US4580539AAir-fuel ratio control apparatusNISSAN MOTOR·Filed 1985·Granted Apr 8, 1986·22 cites·14 claims
- 3374US6700307B2Piezoelectric vibrator unitSEIKO EPSON CORP·Filed 2002·Granted Mar 2, 2004·12 cites·11 claims
- 3474US6460981B1Ink jet recording head having spacer with etched pressurizing chambers and ink supply portsSEIKO EPSON CORP·Filed 2000·Granted Oct 8, 2002·12 cites·1 claims
- 3573US6626524B2Ink jet recording head provided with a vibrator unitSEIKO EPSON CORP·Filed 2001·Granted Sep 30, 2003·14 cites·20 claims
- 3671US6382778B1Ink jet recording head and method of manufacturing the sameSEIKO EPSON CORP·Filed 2000·Granted May 7, 2002·13 cites·27 claims
- 3771US4440621ASystem for detection of air/fuel ratio in IC engine by using oxygen sensor operated with supply of currentNISSAN MOTOR·Filed 1982·Granted Apr 3, 1984·26 cites·9 claims
- 3868US7810903B2Head unit, liquid droplet discharging apparatus, method for discharging liquid, and methods for manufacturing color filter, organic EL element and wiring substrateSEIKO EPSON CORP·Filed 2007·Granted Oct 12, 2010·2 cites·19 claims
- 3968US7480993B2Method of manufacturing a nozzle plateSEIKO EPSON CORP·Filed 2006·Granted Jan 27, 2009·2 cites·5 claims
- 4068US6986189B2Method of manufacturing a piezoelectric vibrator unitSEIKO EPSON CORP·Filed 2001·Granted Jan 17, 2006·11 cites·7 claims
- 4168US6732414B2Method of manufacturing a liquid ink jet headSEIKO EPSON CORP·Filed 2000·Granted May 11, 2004·9 cites·4 claims
- 4267US7153459B2Method of manufacturing an ink jet type recording headSEIKO EPSON CORP·Filed 2003·Granted Dec 26, 2006·9 cites·14 claims
- 4366US6161912AMethod of maintaining and controlling the helmholtz resonant frequency in an ink jet print headSEIKO EPSON CORP·Filed 1997·Granted Dec 19, 2000·23 cites·75 claims
- 4463US5030972ASolid ink supply for ink jetSEIKO EPSON CORP·Filed 1989·Granted Jul 9, 1991·10 cites·3 claims
- 4563US4776943ADevice for detecting air-fuel ratio of mixture over wide range from below to above stoichiometric ratioNISSAN MOTOR·Filed 1987·Granted Oct 11, 1988·22 cites·23 claims
- 4662US7600318B2Method of manufacturing a piezoelectric vibration element for an inkjet recording headSEIKO EPSON CORP·Filed 2006·Granted Oct 13, 2009·1 cites·2 claims
- 4761US6695442B2Ink jet head having structure for eliminating air bubbles and reducing crosstalk and a printer containing the ink headSEIKO EPSON CORP·Filed 1999·Granted Feb 24, 2004·18 cites·29 claims
- 4860US7028377B2Method of producing an ink jet recording headSEIKO EPSON CORP·Filed 2003·Granted Apr 18, 2006·6 cites·2 claims
- 4959US6729002B1Method of producing an ink jet recording headSEIKO EPSON CORP·Filed 2000·Granted May 4, 2004·6 cites·9 claims
- 5059US6578953B2Inkjet recording head, piezoelectric vibration element unit used for the recording head, and method of manufacturing the piezoelectric vibration element unitSEIKO EPSON CORP·Filed 2000·Granted Jun 17, 2003·5 cites·42 claims
Showing the top 50 of 92 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →