Inventor
NISHIDA JUNJI
JP40 patents
⚠️ This page may combine multiple inventors who share the name “NISHIDA JUNJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICOH KK
24 patentsUS7319311B2Jan 15, 2008
Step down switching regulator with the substrate of the switching transistor selectively connected to either its drain or source
RICOH KK59 citations98
US7012405B2Mar 14, 2006
Charging circuit for secondary battery
RICOH KK75 citations97
US7482796B2Jan 27, 2009
Switching regulator, power supply circuit and secondary cell charging circuit including the same
RICOH KK45 citations96
US7659706B2Feb 9, 2010
Current detector circuit and current-mode DC-DC converter using same
RICOH KK21 citations92
US7605573B2Oct 20, 2009
Switching regulator providing slope compensation and voltage control method thereof
RICOH KK26 citations92
US7274171B2Sep 25, 2007
Charging circuit for secondary battery
RICOH KK21 citations92
US7205748B2Apr 17, 2007
Charging circuit for secondary battery
RICOH KK33 citations92
US7098627B2Aug 29, 2006
Method and apparatus for battery charging with constant current, constant voltage, and pulsed charging
RICOH KK22 citations92
US6803745B2Oct 12, 2004
Battery pack charging apparatus and method
RICOH KK41 citations92
US7804285B2Sep 28, 2010
Control of operation of switching regulator to select PWM control or PFM control based on phase comparison
RICOH KK11 citations84
US7679942B2Mar 16, 2010
Step-down DC-to-DC converter
RICOH KK8 citations84
US7629775B2Dec 8, 2009
Battery connection detection circuit
RICOH KK11 citations84
US7624292B2Nov 24, 2009
Battery power detection device
RICOH KK11 citations84
US7576530B2Aug 18, 2009
Switching regulator capable of efficient control at control mode change
RICOH KK12 citations84
US7560911B2Jul 14, 2009
Step-up/step-down switching regulator
RICOH KK10 citations84
US7504805B2Mar 17, 2009
Boost circuit
RICOH KK18 citations84
US7348765B2Mar 25, 2008
DC-DC converter capable of performing for wide and dynamic voltage range
RICOH KK9 citations84
US7782011B2Aug 24, 2010
Battery pack charging apparatus and method for constant current and constant voltage charging of multiple battery packs
RICOH KK9 citations83
US7514910B2Apr 7, 2009
DC-DC converter capable of performing for wide and dynamic voltage range
RICOH KK6 citations74
US7777467B2Aug 17, 2010
Voltage rising/falling type switching regulator and operation control method thereof
RICOH KK6 citations63
US7589509B2Sep 15, 2009
Switching regulator
RICOH KK6 citations63
US7538529B2May 26, 2009
Power-supply apparatus
RICOH KK5 citations63
US7429851B2Sep 30, 2008
Constant voltage power supply circuit
RICOH KK1 citations52
US7684163B2Mar 23, 2010
Abnormal connection detecting circuit and driving device including the same
RICOH KK0 citations42
NISHIDA JUNJI
12 patentsUS8791748B2Jul 29, 2014
Charge pump circuit and operation control method thereof
NISHIDA JUNJI9 citations84
US8294434B2Oct 23, 2012
Constant current output control type switching regulator
NISHIDA JUNJI7 citations84
US8289000B2Oct 16, 2012
Charge control circuit
NISHIDA JUNJI10 citations84
US8258765B2Sep 4, 2012
Switching regulator and semiconductor apparatus including the same
NISHIDA JUNJI13 citations84
US8212538B2Jul 3, 2012
Hysteretic switching regulator and control method used therein
NISHIDA JUNJI10 citations84
US8766615B2Jul 1, 2014
DC-DC converter control circuit and DC-DC converter including same
NISHIDA JUNJI11 citations83
US8760138B2Jun 24, 2014
DC-DC converter control circuit and DC-DC converter including same
NISHIDA JUNJI5 citations72
US8994323B2Mar 31, 2015
Charging circuit and control method therefor
NISHIDA JUNJI2 citations62
US8760137B2Jun 24, 2014
DC-DC converter control circuit and DC-DC converter including same
NISHIDA JUNJI2 citations62
US8294433B2Oct 23, 2012
Constant current supply type of switching regulator
NISHIDA JUNJI4 citations62
US8129970B2Mar 6, 2012
Switching regulator with reverse current detection
NISHIDA JUNJI3 citations62
US8760139B2Jun 24, 2014
DC-DC converter control circuit and DC-DC converter including same
NISHIDA JUNJI0 citations41
RICOH CO LTD
4 patentsUS8368363B2Feb 5, 2013
Current sensing circuit and switching regulator including the same
RICOH CO LTD12 citations84
US7852056B2Dec 14, 2010
Switching regulator
RICOH CO LTD18 citations84
US7843186B2Nov 30, 2010
Switching regulator having high speed response
RICOH CO LTD12 citations84
US8018207B2Sep 13, 2011
Switching regulator
RICOH CO LTD2 citations63