Inventor
OKUMURA MASAFUMI
JP19 patents
⚠️ This page may combine multiple inventors who share the name “OKUMURA MASAFUMI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJITSU LTD
10 patentsUS6492791B1Dec 10, 2002
Protection method, control circuit, and battery unit
FUJITSU LTD92 citations99
US6885168B2Apr 26, 2005
Battery unit having means for preventing over-discharge
FUJITSU LTD37 citations96
US6008629ADec 28, 1999
Charging-and-discharging device for an electronic apparatus, and an electronic apparatus including the same, utilizing a charging device providing a constant charging current
FUJITSU LTD43 citations96
US5608304AMar 4, 1997
Battery protection circuit and battery pack and apparatus using the battery pack
FUJITSU LTD64 citations96
US7276881B2Oct 2, 2007
Protection method, control circuit, and battery unit
FUJITSU LTD25 citations92
US6498459B1Dec 24, 2002
Electronic equipment and battery unit
FUJITSU LTD20 citations92
US5717256AFeb 10, 1998
Power supply apparatus and electronic appliance equipped with the power supply apparatus
FUJITSU LTD29 citations92
US5625237AApr 29, 1997
Remove power source device having improved capacity indication capability, and an electronic device using the removable power source device
FUJITSU LTD42 citations92
US7693671B2Apr 6, 2010
Battery control device, battery control method, battery pack, electronic apparatus and control circuit for calculating charging-discharging count of battery
FUJITSU LTD12 citations84
US5872445AFeb 16, 1999
Power supply device having low internal power consumption and electronic appliances using said power supply device
FUJITSU LTD18 citations84
SHARP KK
5 patentsUS6014920AJan 18, 2000
Paper-punching device for use in a image-forming apparatus
SHARP KK36 citations91
US5839336ANov 24, 1998
Paper-punching device for use in an image-forming apparatus
SHARP KK27 citations91
US4779121AOct 18, 1988
Document scanning device
SHARP KK12 citations74
US5016061AMay 14, 1991
Recirculating automatic document feeder
SHARP KK13 citations72
US4901107AFeb 13, 1990
Lens repositioning device in a copier
SHARP KK3 citations59