Inventor
KITAHARA TSUYOSHI
JP85 patents
⚠️ This page may combine multiple inventors who share the name “KITAHARA TSUYOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
43 patentsUS6328395B1Dec 11, 2001
Ink jet printer and ink jet printing method
SEIKO EPSON CORP190 citations99
US5841456ANov 24, 1998
Transfer printing apparatus with dispersion medium removal member
SEIKO EPSON CORP126 citations97
US6386672B1May 14, 2002
Ink jet type recording head
SEIKO EPSON CORP53 citations96
US6382754B1May 7, 2002
Ink jet printing device
SEIKO EPSON CORP66 citations96
US6139132AOct 31, 2000
Ink jet recording head with nozzle communicating hole having smaller width than pressurizing chambers in direction of array of pressurizing chambers
SEIKO EPSON CORP42 citations96
US5341164AAug 23, 1994
Solid ink supply for ink jet
SEIKO EPSON CORP61 citations96
US4962391AOct 9, 1990
Ink jet printer head
SEIKO EPSON CORP82 citations95
US7305764B2Dec 11, 2007
Method of manufacturing an ink-jet recording head
SEIKO EPSON CORP17 citations93
US6921148B2Jul 26, 2005
Liquid 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 thereof
SEIKO EPSON CORP28 citations93
US6547373B2Apr 15, 2003
Ink jet type recording head
SEIKO EPSON CORP22 citations93
US6499836B1Dec 31, 2002
Piezoelectric ink jet recording head formed by press working
SEIKO EPSON CORP21 citations93
US6408513B1Jun 25, 2002
Method for manufacturing a piezoelectric vibrator unit
SEIKO EPSON CORP19 citations93
US6357846B1Mar 19, 2002
Ink jet recording apparatus and recording method using the same
SEIKO EPSON CORP50 citations93
US6273558B1Aug 14, 2001
Piezoelectric vibrator unit, manufacturing method thereof, and ink jet recording head incorporating the same
SEIKO EPSON CORP30 citations93
US6190009B1Feb 20, 2001
Ink-jet recording device
SEIKO EPSON CORP30 citations93
US6161912ADec 19, 2000
Method of maintaining and controlling the helmholtz resonant frequency in an ink jet print head
SEIKO EPSON CORP23 citations93
US5754204AMay 19, 1998
Ink jet recording head
SEIKO EPSON CORP44 citations93
US5646662AJul 8, 1997
Recording head of an ink-jet type
SEIKO EPSON CORP46 citations93
US5510816AApr 23, 1996
Method and apparatus for driving ink jet recording head
SEIKO EPSON CORP45 citations93
US6217159B1Apr 17, 2001
Ink jet printing device
SEIKO EPSON CORP38 citations92
US5481284AJan 2, 1996
Printer having line-type ink jet recording head
SEIKO EPSON CORP36 citations92
US7867407B2Jan 11, 2011
Method of manufacturing an ink-jet recording head
SEIKO EPSON CORP9 citations84
US7384126B2Jun 10, 2008
Liquid 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 thereof
SEIKO EPSON CORP13 citations84
US7101440B2Sep 5, 2006
Ejecting method and ejecting apparatus
SEIKO EPSON CORP19 citations84
US6986189B2Jan 17, 2006
Method of manufacturing a piezoelectric vibrator unit
SEIKO EPSON CORP11 citations84
US6984010B2Jan 10, 2006
Ink jet recording head, method of manufacturing the same method of driving the same, and ink jet recording apparatus incorporating the same
SEIKO EPSON CORP16 citations84
US6695442B2Feb 24, 2004
Ink jet head having structure for eliminating air bubbles and reducing crosstalk and a printer containing the ink head
SEIKO EPSON CORP18 citations84
US6626524B2Sep 30, 2003
Ink jet recording head provided with a vibrator unit
SEIKO EPSON CORP14 citations84
US6398350B2Jun 4, 2002
Piezoelectric vibrator unit, liquid jet head, manufacturing method of piezoelectric vibrator unit, and manufacturing method of liquid jet head
SEIKO EPSON CORP16 citations84
US6338554B1Jan 15, 2002
Ink-jet recording device
SEIKO EPSON CORP14 citations84
US6296351B1Oct 2, 2001
Ink jet recording head with narrowed reservoir ends
SEIKO EPSON CORP15 citations84
US6779866B2Aug 24, 2004
Liquid jetting apparatus and method for driving the same
SEIKO EPSON CORP19 citations83
US5896149AApr 20, 1999
Ink jet type recording head having a flow passage substrate with a stepped configuration and recesses formed in a surface thereof
SEIKO EPSON CORP18 citations81
US7153459B2Dec 26, 2006
Method of manufacturing an ink jet type recording head
SEIKO EPSON CORP9 citations74
US7028377B2Apr 18, 2006
Method of producing an ink jet recording head
SEIKO EPSON CORP6 citations74
US6732414B2May 11, 2004
Method of manufacturing a liquid ink jet head
SEIKO EPSON CORP9 citations74
US6729002B1May 4, 2004
Method of producing an ink jet recording head
SEIKO EPSON CORP6 citations74
US6700307B2Mar 2, 2004
Piezoelectric vibrator unit
SEIKO EPSON CORP12 citations74
US6578953B2Jun 17, 2003
Inkjet recording head, piezoelectric vibration element unit used for the recording head, and method of manufacturing the piezoelectric vibration element unit
SEIKO EPSON CORP5 citations74
US6460981B1Oct 8, 2002
Ink jet recording head having spacer with etched pressurizing chambers and ink supply ports
SEIKO EPSON CORP12 citations74
US6417600B2Jul 9, 2002
Piezoelectric vibrator unit, method for manufacturing the same, and ink jet recording head comprising the same
SEIKO EPSON CORP12 citations74
US6382778B1May 7, 2002
Ink jet recording head and method of manufacturing the same
SEIKO EPSON CORP13 citations74
US6338549B1Jan 15, 2002
Piezoelectric vibrator unit, method for manufacturing the same, and ink-jet recording head
SEIKO EPSON CORP9 citations74
NISSAN MOTOR
7 patentsUS4658790AApr 21, 1987
Air/fuel ratio detecting device and control system using same
NISSAN MOTOR29 citations93
US4601809AJul 22, 1986
Oxygen concentration detecting system using oxygen sensor including oxygen ion pump
NISSAN MOTOR54 citations93
US4601273AJul 22, 1986
Air/fuel ratio monitoring system in IC engine using oxygen sensor
NISSAN MOTOR29 citations92
US4507986AApr 2, 1985
Control system for motor vehicle
NISSAN MOTOR53 citations92
US4776943AOct 11, 1988
Device for detecting air-fuel ratio of mixture over wide range from below to above stoichiometric ratio
NISSAN MOTOR22 citations82
US4580539AApr 8, 1986
Air-fuel ratio control apparatus
NISSAN MOTOR22 citations82
US4440621AApr 3, 1984
System for detection of air/fuel ratio in IC engine by using oxygen sensor operated with supply of current
NISSAN MOTOR26 citations82
Showing the top 50 of 85 patents by PatentIndex Score.