Inventor
SAEKI MITSUO
JP33 patents
⚠️ This page may combine multiple inventors who share the name “SAEKI MITSUO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
29 patentsUS6492791B1Dec 10, 2002
Protection method, control circuit, and battery unit
FUJITSU LTD92 citations99
US5739667AApr 14, 1998
Control system for charging batteries and electronic apparatus using same
FUJITSU LTD259 citations99
US6452364B1Sep 17, 2002
Battery charge control circuit, battery charging device, and battery charge control method
FUJITSU LTD53 citations96
US6404076B1Jun 11, 2002
DC-DC converter circuit selecting lowest acceptable input source
FUJITSU LTD39 citations96
US6046896AApr 4, 2000
DC-to-DC converter capable of preventing overvoltage
FUJITSU LTD45 citations96
US6028755AFeb 22, 2000
DC-to-DC converter capable of preventing overvoltages
FUJITSU LTD77 citations96
US6051955AApr 18, 2000
Protection circuit and battery unit
FUJITSU LTD82 citations94
US7148587B2Dec 12, 2006
DC-DC converter circuit, power supply selection circuit, and apparatus useful for increasing conversion efficiency
FUJITSU LTD18 citations93
US6989652B2Jan 24, 2006
Protection method, control circuit, and battery unit
FUJITSU LTD26 citations93
US6657415B2Dec 2, 2003
Portable apparatus
FUJITSU LTD28 citations93
US6566766B2May 20, 2003
DC-DC converter circuit, power supply selection circuit, and apparatus
FUJITSU LTD27 citations93
US6204648B1Mar 20, 2001
DC-to-DC converter capable of preventing overvoltage
FUJITSU LTD38 citations93
US5781000AJul 14, 1998
Power control unit loading test method
FUJITSU LTD37 citations93
US5717318AFeb 10, 1998
Step-down type DC-DC regulator
FUJITSU LTD44 citations93
US5572112ANov 5, 1996
Power supply unit
FUJITSU LTD51 citations93
US7492135B2Feb 17, 2009
Switching converter
FUJITSU LTD30 citations92
US6940737B2Sep 6, 2005
Power supply control method
FUJITSU LTD24 citations92
US6664772B2Dec 16, 2003
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
FUJITSU LTD19 citations92
US6414403B2Jul 2, 2002
Power unit
FUJITSU LTD41 citations92
US6147477ANov 14, 2000
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
FUJITSU LTD32 citations92
US6262494B1Jul 17, 2001
Battery unit and information processing system having battery unit mounted therein
FUJITSU LTD39 citations91
US6486635B1Nov 26, 2002
Monitor signal output circuit, battery pack, battery voltage monitor circuit, battery system, apparatus, battery voltage monitor method, and battery voltage monitor program storage medium
FUJITSU LTD27 citations90
US6911806B2Jun 28, 2005
DC to DC converter producing output voltage exhibiting rise and fall characteristics independent of load thereon
FUJITSU LTD10 citations74
US6639812B2Oct 28, 2003
Power supply control circuit that adjusts output power based on variable input power
FUJITSU LTD11 citations74
US8013587B2Sep 6, 2011
DC/DC power supply circuit with a bypass circuit
FUJITSU LTD5 citations63
US7129682B2Oct 31, 2006
DC to DC converter producing output voltage exhibit rise and fall characteristics independent of load thereon
FUJITSU LTD1 citations63
US6909619B2Jun 21, 2005
Spike control apparatus for DC-DC converter
FUJITSU LTD6 citations62
US6160321ADec 12, 2000
Apparatus for supplying power from portable computer to extended station
FUJITSU LTD4 citations61
US8344718B2Jan 1, 2013
DC-DC converter, method for controlling DC-DC converter, and electronic device
FUJITSU LTD0 citations52