Inventor
YAMADA KOUHEI
JP31 patents
⚠️ This page may combine multiple inventors who share the name “YAMADA KOUHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
YAMADA KOUHEI
7 patentsUS9778291B2Oct 3, 2017
AC input voltage interruption detection method and circuit
YAMADA KOUHEI2 citations72
US8648624B2Feb 11, 2014
Voltage-to-current converter circuit
YAMADA KOUHEI5 citations72
US8878508B2Nov 4, 2014
DC-DC converter control circuit and control method
YAMADA KOUHEI2 citations62
US8823351B2Sep 2, 2014
Overvoltage threshold control system of DC to DC converter
YAMADA KOUHEI2 citations62
US8059437B2Nov 15, 2011
Integrated circuit and DC-DC converter formed by using the integrated circuit
YAMADA KOUHEI2 citations62
US9124254B2Sep 1, 2015
DC-DC converter control method and DC-DC converter control circuit
YAMADA KOUHEI0 citations51
US8471540B2Jun 25, 2013
DC-DC converter
YAMADA KOUHEI1 citations51
DENSO CORP
5 patentsUS6210641B1Apr 3, 2001
Air-fuel ratio control system and gas sensor for engines
DENSO CORP45 citations91
US7901556B2Mar 8, 2011
Gas sensor equipped with cover assembly designed to minimize splashing of sensor element with water
DENSO CORP16 citations84
US7708869B2May 4, 2010
Gas sensor
DENSO CORP16 citations84
US7559229B2Jul 14, 2009
Gas sensor with increased water-incursion resistance and method of operating gas sensor
DENSO CORP6 citations63
US7631535B2Dec 15, 2009
Method of confirming reception of drops of water and powder used for the method
DENSO CORP2 citations61
FUJI ELEC DEVICE TECH CO LTD
4 patentsUS7492137B2Feb 17, 2009
Series regulator and differential amplifier circuit thereof
FUJI ELEC DEVICE TECH CO LTD22 citations92
US7872461B2Jan 18, 2011
Reverse current stopping circuit of synchronous rectification type DC-DC converter
FUJI ELEC DEVICE TECH CO LTD11 citations84
US7408390B2Aug 5, 2008
DC to DC converter and voltage detecting circuit and current detecting circuit thereof
FUJI ELEC DEVICE TECH CO LTD17 citations84
US7652861B2Jan 26, 2010
Overcurrent detecting circuit and reference voltage generating circuit
FUJI ELEC DEVICE TECH CO LTD1 citations52
FUJI ELECTRIC SYSTEMS CO LTD
3 patentsUS7906942B2Mar 15, 2011
Control circuit of DC-DC converter with synchronous rectifier adjusting signal to improve efficiency at light loads and control method thereof
FUJI ELECTRIC SYSTEMS CO LTD29 citations92
US8013585B2Sep 6, 2011
DC-DC converter and DC-DC power conversion method employing overcurrent protection
FUJI ELECTRIC SYSTEMS CO LTD13 citations84
US7812578B2Oct 12, 2010
DC-DC converter
FUJI ELECTRIC SYSTEMS CO LTD8 citations84