Inventor · disambiguated record
Osamu Shinkawa
Also filed as: SHINKAWA OSAMU
79 granted patents·15 pending applications·884 citations·filing 1992–2025
99Inventor score
Top patents by PatentIndex Score
94 records- 0197US6483270B1Method and device for controlling position sensorless motorSEIKO EPSON CORP·Filed 1999·Granted Nov 19, 2002·119 cites·22 claims
- 0297US6081056AMotor and method for producing the sameSEIKO EPSON CORP·Filed 1997·Granted Jun 27, 2000·172 cites·22 claims
- 0395US7429093B2Droplet discharging device and method of detecting discharge abnormality thereofSEIKO EPSON CORP·Filed 2005·Granted Sep 30, 2008·23 cites·7 claims
- 0494US7581802B2Liquid jet apparatus, printing apparatus, and method of adjusting phase of drive pulseSEIKO EPSON CORP·Filed 2007·Granted Sep 1, 2009·18 cites·6 claims
- 0592US9221253B2Liquid ejection apparatusSEIKO EPSON CORP·Filed 2014·Granted Dec 29, 2015·6 cites·6 claims
- 0692US8708449B2Liquid ejection device and liquid testing methodSHINKAWA OSAMU·Filed 2011·Granted Apr 29, 2014·7 cites·6 claims
- 0792US8444247B2Liquid ejection device and liquid testing methodSHINKAWA OSAMU·Filed 2011·Granted May 21, 2013·8 cites·7 claims
- 0891US7566109B2Droplet ejection apparatus and a method of detecting and judging head failure in the sameSEIKO EPSON CORP·Filed 2007·Granted Jul 28, 2009·12 cites·10 claims
- 0989US11772383B2Storage amount detection device and liquid discharge deviceSEIKO EPSON CORP·Filed 2021·Granted Oct 3, 2023·1 cites·7 claims
- 1089US9636907B2Liquid discharge apparatus, control method of liquid discharge apparatus, and control program of liquid discharge apparatusSEIKO EPSON CORP·Filed 2016·Granted May 2, 2017·3 cites·9 claims
- 1189US8371676B2Liquid ejection device and liquid testing methodSEIKO EPSON CORP·Filed 2011·Granted Feb 12, 2013·5 cites·8 claims
- 1289US5780983ABrushless DC motor drive apparatusSEIKO EPSON CORP·Filed 1996·Granted Jul 14, 1998·67 cites·24 claims
- 1388US8459790B2Liquid ejecting apparatusHARA KEIJI·Filed 2011·Granted Jun 11, 2013·8 cites·5 claims
- 1486US6154422APower-generating device, charging method and clocking deviceSEIKO EPSON CORP·Filed 1998·Granted Nov 28, 2000·78 cites·28 claims
- 1585US10639885B2Liquid discharging apparatus including drive signal generation unit that generates first and second drive signals for checking discharge abnormalitiesSEIKO EPSON CORP·Filed 2019·Granted May 5, 2020·2 cites·15 claims
- 1685US9457563B2Liquid discharging apparatusSEIKO EPSON CORP·Filed 2014·Granted Oct 4, 2016·4 cites·2 claims
- 1785US8240798B2Head drive apparatus of inkjet printer and inkjet printerOSHIMA ATSUSHI·Filed 2007·Granted Aug 14, 2012·8 cites·4 claims
- 1883US9610768B1Liquid discharging apparatus and discharge state determination method of liquid in liquid discharging apparatusSEIKO EPSON CORP·Filed 2016·Granted Apr 4, 2017·2 cites·8 claims
- 1983US9278520B2Liquid discharging apparatusSEIKO EPSON CORP·Filed 2015·Granted Mar 8, 2016·2 cites·17 claims
- 2083US8371675B2Liquid ejection device and liquid testing methodSEIKO EPSON CORP·Filed 2011·Granted Feb 12, 2013·3 cites·8 claims
- 2183US7150513B2Droplet ejection apparatus and ejection failure recovery methodSEIKO EPSON CORP·Filed 2004·Granted Dec 19, 2006·25 cites·70 claims
- 2282US8899710B2Printing apparatus and inspection methodSEIKO EPSON CORP·Filed 2013·Granted Dec 2, 2014·3 cites·4 claims
- 2381US7883204B2Ink jet printerSEIKO EPSON CORP·Filed 2007·Granted Feb 8, 2011·6 cites·7 claims
- 2481US7300131B2Droplet ejection apparatus with ejection failure detection meansSEIKO EPSON CORP·Filed 2004·Granted Nov 27, 2007·22 cites·3 claims
- 2581US5518373ACompressor start-up controllerZEXEL CORP·Filed 1994·Granted May 21, 1996·42 cites·6 claims
- 2680US8783821B2Liquid discharge device, testing method, and medium with recorded programSUZUKI TOSHIYUKI·Filed 2012·Granted Jul 22, 2014·2 cites·9 claims
- 2779US2025303706A1Liquid discharge device and liquid discharge headSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 2879US2025303703A1Liquid discharge device and liquid discharge headSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 2979US2025303705A1Liquid discharge device, liquid discharge head, and liquid discharge methodSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 3079US2025303704A1Liquid discharge device and liquid discharge headSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 3179US2025303692A1Liquid discharge device and liquid discharge headSEIKO EPSON CORP·Filed 2025·Application pending·0 cites
- 3277US6483276B1Electronic device with variable chopping signal and duty ratio selection for strong brakingSEIKO EPSON CORP·Filed 2000·Granted Nov 19, 2002·21 cites·32 claims
- 3374US8777347B2Liquid discharging apparatus, inspection method, and medium having recorded programSHINKAWA OSAMU·Filed 2012·Granted Jul 15, 2014·2 cites·9 claims
- 3474US7387356B2Droplet ejection apparatus and a method of detecting and judging head failure in the sameSEIKO EPSON CORP·Filed 2004·Granted Jun 17, 2008·13 cites·47 claims
- 3573US9327536B2Liquid ejection device, inspection method, and programSEIKO EPSON CORP·Filed 2014·Granted May 3, 2016·1 cites·6 claims
- 3672US7328962B2Droplet ejection apparatusSEIKO EPSON CORP·Filed 2004·Granted Feb 12, 2008·14 cites·22 claims
- 3771US8287115B2Recording apparatus and method for heating recording mediumSHINKAWA OSAMU·Filed 2008·Granted Oct 16, 2012·3 cites·4 claims
- 3871US6421261B1Power supply apparatus with unidirectional unitsSEIKO EPSON CORP·Filed 1997·Granted Jul 16, 2002·41 cites·23 claims
- 3970US11654689B2Liquid discharge deviceSEIKO EPSON CORP·Filed 2021·Granted May 23, 2023·0 cites·9 claims
- 4070US7108348B2Droplet ejecting apparatus and ejection abnormality detecting/determining method for a droplet ejecting headSEIKO EPSON CORP·Filed 2004·Granted Sep 19, 2006·16 cites·16 claims
- 4167US6252828B1Electronically controlled mechanical timepiece and control method thereforSEIKO EPSON CORP·Filed 2000·Granted Jun 26, 2001·8 cites·8 claims
- 4266US8430466B2Head drive device of inkjet printer and ink jet printerTABATA KUNIO·Filed 2007·Granted Apr 30, 2013·2 cites·3 claims
- 4366US8070255B2Liquid ejecting apparatusSHINKAWA OSAMU·Filed 2009·Granted Dec 6, 2011·2 cites·5 claims
- 4465US11975537B2Liquid ejecting apparatusSEIKO EPSON CORP·Filed 2022·Granted May 7, 2024·0 cites·7 claims
- 4565US7328960B2Droplet ejection apparatusSEIKO EPSON CORP·Filed 2004·Granted Feb 12, 2008·10 cites·25 claims
- 4665US7232199B2Droplet ejection apparatus and method of detecting and judging ejection failure in droplet ejection headsSEIKO EPSON CORP·Filed 2004·Granted Jun 19, 2007·10 cites·13 claims
- 4764US12337597B2Liquid ejecting apparatus and head unit for determining presence of foreign matterSEIKO EPSON CORP·Filed 2023·Granted Jun 24, 2025·0 cites·13 claims
- 4864US11465412B2Head unitSEIKO EPSON CORP·Filed 2020·Granted Oct 11, 2022·0 cites·7 claims
- 4963US8287069B2Head drive device and drive control method of ink jet printer, and ink jet printerTABATA KUNIO·Filed 2006·Granted Oct 16, 2012·2 cites·9 claims
- 5062US9056455B2Liquid discharge device, testing method, and medium with recorded programSEIKO EPSON CORP·Filed 2014·Granted Jun 16, 2015·0 cites·8 claims
Showing the top 50 of 94 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when Osamu Shinkawa 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 →