Inventor
GEREN MICHAEL D
US24 patents
⚠️ This page may combine multiple inventors who share the name “GEREN MICHAEL D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
17 patentsUS6879133B1Apr 12, 2005
Battery protection circuit
MOTOROLA INC67 citations98
US5969508AOct 19, 1999
Battery charging method using battery circuitry impedence measurement to determine optimum charging voltage
MOTOROLA INC61 citations95
US6819083B1Nov 16, 2004
Dual use thermistor for battery cell thermal protection and battery pack overcharge/undercharge protection
MOTOROLA INC38 citations92
US6771051B2Aug 3, 2004
Thermally limited battery protection and charging circuit
MOTOROLA INC23 citations92
US6100664AAug 8, 2000
Sub-miniature high efficiency battery charger exploiting leakage inductance of wall transformer power supply, and method therefor
MOTOROLA INC50 citations92
US6091229AJul 18, 2000
Sub-miniature high efficiency battery charger system and method
MOTOROLA INC25 citations92
US5694025ADec 2, 1997
Battery charger with control circuit
MOTOROLA INC28 citations92
US7068012B1Jun 27, 2006
Atmospheric explosive battery protection circuit having a robust protection system
MOTOROLA INC51 citations90
US6903533B1Jun 7, 2005
Power fault battery protection circuit
MOTOROLA INC37 citations89
US6307758B1Oct 23, 2001
Transformer secondary disconnect
MOTOROLA INC16 citations84
US6054843AApr 25, 2000
High speed battery charging system with high accuracy voltage sensing
MOTOROLA INC19 citations84
US7145313B2Dec 5, 2006
Battery protection circuit for simulating an overcurrent condition based on battery current flow
MOTOROLA INC13 citations82
US5705915AJan 6, 1998
Method for charging a battery
MOTOROLA INC15 citations70
US6879517B2Apr 12, 2005
Battery circuit with three-terminal memory device
MOTOROLA INC5 citations63
US7096047B2Aug 22, 2006
Electronic audio accessory for use with automotive stereo loudspeakers
MOTOROLA INC5 citations56
US6400587B1Jun 4, 2002
Universal input flyback with secondary shunt voltage limiter
MOTOROLA INC6 citations54
US7027604B2Apr 11, 2006
Circuit to prevent acoustic feedback for a cellular speakerphone
MOTOROLA INC0 citations43
MOTOROLA SOLUTIONS INC
5 patentsUS9843220B2Dec 12, 2017
Method and apparatus for operating an internal charger system of a portable electronic device
MOTOROLA SOLUTIONS INC25 citations93
US9209676B2Dec 8, 2015
Method and apparatus for charging batteries having different voltage ranges with a single conversion charger
MOTOROLA SOLUTIONS INC10 citations84
US9097775B2Aug 4, 2015
Apparatus and method for discharging a battery and determining a condition of the battery
MOTOROLA SOLUTIONS INC1 citations51
US10759301B2Sep 1, 2020
Systems and methods for reducing current drain in batteries
MOTOROLA SOLUTIONS INC0 citations48
US9985694B2May 29, 2018
Methods and systems for contactless battery discharging
MOTOROLA SOLUTIONS INC0 citations34