Inventor
JOHNSON MARK J
US42 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON MARK J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
17 patentsUS6515623B2Feb 4, 2003
Enhanced location methodology for a location system
MOTOROLA INC321 citations99
US7064660B2Jun 20, 2006
System and method for inferring an electronic rendering of an environment
MOTOROLA INC72 citations97
US5745203AApr 28, 1998
Liquid crystal display device including multiple ambient light illumination modes with switchable holographic optical element
MOTOROLA INC103 citations97
US6947880B2Sep 20, 2005
Method for improving accuracy of a velocity model
MOTOROLA INC81 citations96
US5343437AAug 30, 1994
Memory having nonvolatile and volatile memory banks
MOTOROLA INC76 citations95
US5459458AOct 17, 1995
Virtual pager for general purpose data terminal
MOTOROLA INC248 citations93
US7876706B2Jan 25, 2011
Method and apparatus for root node selection in an ad hoc network
MOTOROLA INC23 citations92
US6310576B1Oct 30, 2001
Method of identifying location using a master clock to synchronize time of arrival signals
MOTOROLA INC46 citations92
US5128971AJul 7, 1992
Frequency synchronization apparatus
MOTOROLA INC23 citations92
US7239876B2Jul 3, 2007
Method for increased location receiver sensitivity
MOTOROLA INC33 citations89
US7697456B2Apr 13, 2010
Method and apparatus for omniscient root node selection in an ad hoc network
MOTOROLA INC18 citations84
US6593883B2Jul 15, 2003
Timing estimation method and apparatus for a location system
MOTOROLA INC15 citations83
US5023940AJun 11, 1991
Low-power DSP squelch
MOTOROLA INC20 citations81
US5367691ANov 22, 1994
Pipe-staggered apparatus and method utilizing carry look-ahead signal processing
MOTOROLA INC9 citations74
US4922549AMay 1, 1990
Digital FM squelch detector
MOTOROLA INC15 citations74
US4807261AFeb 21, 1989
Automatic channel polarity detection and correction arrangement and method
MOTOROLA INC4 citations63
US7724702B2May 25, 2010
Multiple configuration communication apparatus
MOTOROLA INC1 citations52
CUMMINS FILTRATION IP INC
7 patentsUS7563368B2Jul 21, 2009
Filtration device with releasable additive
CUMMINS FILTRATION IP INC12 citations83
US9353713B2May 31, 2016
Fuel water separator filter with water drain
CUMMINS FILTRATION IP INC7 citations81
US11724220B2Aug 15, 2023
Undulated interlocking housing-endplate interface geometry
CUMMINS FILTRATION IP INC9 citations80
US7431575B2Oct 7, 2008
Auto valve priming pump
CUMMINS FILTRATION IP INC7 citations73
US12330099B2Jun 17, 2025
Undulated interlocking housing-endplate interface geometry
CUMMINS FILTRATION IP INC0 citations57
US8007667B2Aug 30, 2011
Filtration device with releasable additive
CUMMINS FILTRATION IP INC0 citations52
US9675909B2Jun 13, 2017
No filter no run fluid filtration system
CUMMINS FILTRATION IP INC1 citations49
ZENITH CUTTER INC
5 patentsUSD772316SNov 22, 2016
Knife assembly
ZENITH CUTTER INC17 citations89
USD772317SNov 22, 2016
Knife insert
ZENITH CUTTER INC7 citations81
US10350776B2Jul 16, 2019
Cutoff knife serration
ZENITH CUTTER INC0 citations49
USD791205SJul 4, 2017
Serrated male slot knife
ZENITH CUTTER INC0 citations45
USD791206SJul 4, 2017
Serrated male slot knife
ZENITH CUTTER INC1 citations42
FLEETGUARD INC
4 patentsUS7527739B2May 5, 2009
Apparatus, system, and method for multistage water separation
FLEETGUARD INC70 citations97
US7506663B2Mar 24, 2009
Magnetic check valve
FLEETGUARD INC65 citations97
US6994076B2Feb 7, 2006
Electrostatic droplet collector with replaceable electrode
FLEETGUARD INC7 citations74
US7082897B2Aug 1, 2006
Electrostatic precipitator with pulsed high voltage power supply
FLEETGUARD INC4 citations63