Inventor
FUKUZAWA AKIHIRO
JP32 patents
⚠️ This page may combine multiple inventors who share the name “FUKUZAWA AKIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SEIKO EPSON CORP
31 patentsUS5561438AOct 1, 1996
Ferrite Antenna
SEIKO EPSON CORP44 citations92
US7870786B2Jan 18, 2011
Detection device, sensor, and electronic instrument
SEIKO EPSON CORP14 citations84
US7845227B2Dec 7, 2010
Detection device, sensor, and electronic instrument
SEIKO EPSON CORP10 citations84
US7786918B2Aug 31, 2010
A/D conversion circuit and electronic instrument
SEIKO EPSON CORP8 citations84
US7782042B2Aug 24, 2010
Reference voltage supply circuit, analog circuit, and electronic instrument
SEIKO EPSON CORP12 citations84
US7619474B2Nov 17, 2009
Analog circuit, electronic instrument, and operational amplifier
SEIKO EPSON CORP8 citations84
US7808412B2Oct 5, 2010
Integrated circuit device and electronic instrument
SEIKO EPSON CORP7 citations74
US7804432B2Sep 28, 2010
Integrated circuit device and electronic instrument
SEIKO EPSON CORP7 citations74
US10305490B2May 28, 2019
Circuit device, oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP2 citations73
US10224904B2Mar 5, 2019
Oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP3 citations73
US9537448B2Jan 3, 2017
Oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP3 citations73
US10333491B2Jun 25, 2019
Oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP4 citations70
US7924202B2Apr 12, 2011
Integrated circuit device and electronic instrument
SEIKO EPSON CORP4 citations63
US7812681B2Oct 12, 2010
Driver device, physical quantity measuring device, and electronic instrument
SEIKO EPSON CORP5 citations63
US10461693B2Oct 29, 2019
Circuit device, oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP1 citations62
US10270452B2Apr 23, 2019
Circuit device, oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP1 citations62
US10218375B2Feb 26, 2019
Circuit device, oscillator, electronic apparatus, and vehicle
SEIKO EPSON CORP1 citations62
US6208281B1Mar 27, 2001
Resistance ladder together with digital-analog converter and semiconductor using the same
SEIKO EPSON CORP3 citations60
US10103708B2Oct 16, 2018
Heating body, vibration device, electronic apparatus, and moving object
SEIKO EPSON CORP0 citations52
US10084459B2Sep 25, 2018
Oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP0 citations52
US9712111B2Jul 18, 2017
Oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP1 citations52
US9692425B2Jun 27, 2017
Oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP0 citations52
US7808414B2Oct 5, 2010
A/D conversion circuit and electronic instrument
SEIKO EPSON CORP1 citations52
US12463852B2Nov 4, 2025
Semiconductor device and electronic apparatus
SEIKO EPSON CORP0 citations50
US10084429B2Sep 25, 2018
Heating body, resonation device, electronic apparatus, and moving object
SEIKO EPSON CORP0 citations42
US9628022B2Apr 18, 2017
Oscillation circuit, oscillator, method of manufacturing oscillator, electronic device, and moving object
SEIKO EPSON CORP0 citations42
US9438167B2Sep 6, 2016
Oscillation circuit, oscillator, manufacturing method of oscillator, electronic device, and moving object
SEIKO EPSON CORP0 citations42
US9312812B2Apr 12, 2016
Oscillation circuit, oscillator, method of manufacturing oscillator, electronic device, and moving object
SEIKO EPSON CORP0 citations42
US9246469B2Jan 26, 2016
Manufacturing method of oscillator, manufacturing method of circuit device and the circuit device
SEIKO EPSON CORP0 citations42
US7859351B2Dec 28, 2010
Driver device, physical quantity measuring device, and electronic instrument
SEIKO EPSON CORP0 citations42
US9559718B2Jan 31, 2017
D/A conversion circuit, oscillator, electronic apparatus, and moving object
SEIKO EPSON CORP0 citations41