P

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 patents
US6483270B1Nov 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 patents

ZEXEL CORP

2 patents

OSHIMA ATSUSHI

1 patent

HARA KEIJI

1 patent

SUZUKI TOSHIYUKI

1 patent

TABATA KUNIO

1 patent

Showing the top 50 of 79 patents by PatentIndex Score.