Inventor
SHINKAWA OSAMU
JP79 patents
⚠️ This page may combine multiple inventors who share the name “SHINKAWA OSAMU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
40 patentsUS6483270B1Nov 19, 2002
Method and device for controlling position sensorless motor
SEIKO EPSON CORP119 citations98
US6081056AJun 27, 2000
Motor and method for producing the same
SEIKO EPSON CORP172 citations98
US6154422ANov 28, 2000
Power-generating device, charging method and clocking device
SEIKO EPSON CORP78 citations96
US5780983AJul 14, 1998
Brushless DC motor drive apparatus
SEIKO EPSON CORP67 citations96
US7429093B2Sep 30, 2008
Droplet discharging device and method of detecting discharge abnormality thereof
SEIKO EPSON CORP23 citations93
US7581802B2Sep 1, 2009
Liquid jet apparatus, printing apparatus, and method of adjusting phase of drive pulse
SEIKO EPSON CORP18 citations92
US7300131B2Nov 27, 2007
Droplet ejection apparatus with ejection failure detection means
SEIKO EPSON CORP22 citations92
US7150513B2Dec 19, 2006
Droplet ejection apparatus and ejection failure recovery method
SEIKO EPSON CORP25 citations92
US6483276B1Nov 19, 2002
Electronic device with variable chopping signal and duty ratio selection for strong braking
SEIKO EPSON CORP21 citations92
US6421261B1Jul 16, 2002
Power supply apparatus with unidirectional units
SEIKO EPSON CORP41 citations92
US7328962B2Feb 12, 2008
Droplet ejection apparatus
SEIKO EPSON CORP14 citations84
US7328960B2Feb 12, 2008
Droplet ejection apparatus
SEIKO EPSON CORP10 citations84
US7232199B2Jun 19, 2007
Droplet ejection apparatus and method of detecting and judging ejection failure in droplet ejection heads
SEIKO EPSON CORP10 citations84
US7108348B2Sep 19, 2006
Droplet ejecting apparatus and ejection abnormality detecting/determining method for a droplet ejecting head
SEIKO EPSON CORP16 citations84
US7566109B2Jul 28, 2009
Droplet ejection apparatus and a method of detecting and judging head failure in the same
SEIKO EPSON CORP12 citations83
US7387356B2Jun 17, 2008
Droplet ejection apparatus and a method of detecting and judging head failure in the same
SEIKO EPSON CORP13 citations83
US6421263B1Jul 16, 2002
AC voltage detection circuit and method, charging circuit and method, chopper circuit and chopping method, chopper charging circuit and method, electronic apparatus, and timepiece
SEIKO EPSON CORP11 citations74
US6373789B2Apr 16, 2002
Electronically controlled mechanical timepiece and method controlling the same
SEIKO EPSON CORP13 citations74
US6327164B1Dec 4, 2001
Chopper circuit, chopper circuit control method, chopper-type charging circuit, electronic device, and timekeeping apparatus
SEIKO EPSON CORP11 citations74
US6252828B1Jun 26, 2001
Electronically controlled mechanical timepiece and control method therefor
SEIKO EPSON CORP8 citations74
US6041021AMar 21, 2000
Electronically controlled mechanical timepiece and control method therefor
SEIKO EPSON CORP9 citations74
US10639885B2May 5, 2020
Liquid discharging apparatus including drive signal generation unit that generates first and second drive signals for checking discharge abnormalities
SEIKO EPSON CORP2 citations73
US9636907B2May 2, 2017
Liquid discharge apparatus, control method of liquid discharge apparatus, and control program of liquid discharge apparatus
SEIKO EPSON CORP3 citations73
US9221253B2Dec 29, 2015
Liquid ejection apparatus
SEIKO EPSON CORP6 citations73
US8371676B2Feb 12, 2013
Liquid ejection device and liquid testing method
SEIKO EPSON CORP5 citations73
US6477116B1Nov 5, 2002
Rotation controller and rotation control method
SEIKO EPSON CORP10 citations73
US9610768B1Apr 4, 2017
Liquid discharging apparatus and discharge state determination method of liquid in liquid discharging apparatus
SEIKO EPSON CORP2 citations72
US9457563B2Oct 4, 2016
Liquid discharging apparatus
SEIKO EPSON CORP4 citations72
US11772383B2Oct 3, 2023
Storage amount detection device and liquid discharge device
SEIKO EPSON CORP1 citations63
US11654689B2May 23, 2023
Liquid discharge device
SEIKO EPSON CORP0 citations63
US8371675B2Feb 12, 2013
Liquid ejection device and liquid testing method
SEIKO EPSON CORP3 citations63
US7883204B2Feb 8, 2011
Ink jet printer
SEIKO EPSON CORP6 citations63
US7341325B2Mar 11, 2008
Droplet ejection apparatus and method of detecting ejection failure in droplet ejection heads
SEIKO EPSON CORP4 citations63
US7328961B2Feb 12, 2008
Droplet ejection apparatus and method of judging ejection failure in droplet ejection heads
SEIKO EPSON CORP2 citations63
US7311373B2Dec 25, 2007
Droplet ejection apparatus including recovery processing with a standby power supply
SEIKO EPSON CORP4 citations63
USRE38110EMay 6, 2003
Electronically controlled mechanical timepiece and control method therefor
SEIKO EPSON CORP1 citations63
US6304474B1Oct 16, 2001
Chopper circuit, chopper circuit control method, chopper-type charging circuit, electronic device, and timekeeping apparatus
SEIKO EPSON CORP5 citations63
US11465412B2Oct 11, 2022
Head unit
SEIKO EPSON CORP0 citations62
US9278520B2Mar 8, 2016
Liquid discharging apparatus
SEIKO EPSON CORP2 citations62
US8899710B2Dec 2, 2014
Printing apparatus and inspection method
SEIKO EPSON CORP3 citations62
SHINKAWA OSAMU
4 patentsUS8708449B2Apr 29, 2014
Liquid ejection device and liquid testing method
SHINKAWA OSAMU7 citations84
US8444247B2May 21, 2013
Liquid ejection device and liquid testing method
SHINKAWA OSAMU8 citations84
US8777347B2Jul 15, 2014
Liquid discharging apparatus, inspection method, and medium having recorded program
SHINKAWA OSAMU2 citations62
US8287115B2Oct 16, 2012
Recording apparatus and method for heating recording medium
SHINKAWA OSAMU3 citations62
ZEXEL CORP
2 patentsOSHIMA ATSUSHI
1 patentHARA KEIJI
1 patentSUZUKI TOSHIYUKI
1 patentTABATA KUNIO
1 patentShowing the top 50 of 79 patents by PatentIndex Score.