Inventor
MUTHUSWAMY SIVAKUMAR
US48 patents
⚠️ This page may combine multiple inventors who share the name “MUTHUSWAMY SIVAKUMAR”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
MOTOROLA INC
45 patentsUS6268077B1Jul 31, 2001
Portable fuel cell power supply
MOTOROLA INC289 citations99
US6080501AJun 27, 2000
Fuel cell with integral fuel storage
MOTOROLA INC161 citations99
US7710932B2May 4, 2010
Method and apparatus for encouraging routing in a network
MOTOROLA INC270 citations98
US6486874B1Nov 26, 2002
Method of pre-caching user interaction elements using input device position
MOTOROLA INC159 citations98
US6423434B1Jul 23, 2002
Method and apparatus for managing fuel cell performance
MOTOROLA INC83 citations98
US6406808B1Jun 18, 2002
Method and apparatus for thermal management of fuel cell systems
MOTOROLA INC87 citations98
US6127058AOct 3, 2000
Planar fuel cell
MOTOROLA INC280 citations98
US7028001B1Apr 11, 2006
System and method for measuring web page advertisement impressions
MOTOROLA INC158 citations97
US6606525B1Aug 12, 2003
System and method of merging static data in web pages
MOTOROLA INC144 citations96
US6214487B1Apr 10, 2001
Integral sensors for monitoring a fuel cell membrane and methods of monitoring
MOTOROLA INC81 citations96
US6132895AOct 17, 2000
Fuel cell
MOTOROLA INC76 citations96
US6060188AMay 9, 2000
High pressure coaxial fuel cell
MOTOROLA INC78 citations96
US5937265AAug 10, 1999
Tooling die insert and rapid method for fabricating same
MOTOROLA INC78 citations96
US5831832ANov 3, 1998
Molded plastic ball grid array package
MOTOROLA INC78 citations96
US5681515AOct 28, 1997
Method of fabricating an elastomeric keypad
MOTOROLA INC94 citations96
US7697450B2Apr 13, 2010
Method and apparatus for broadcast in an ad hoc network with dynamic selection of relay nodes
MOTOROLA INC28 citations93
US6689194B2Feb 10, 2004
Fuel cell system having a replaceable getter element for purifying the fuel supply
MOTOROLA INC21 citations93
US6584825B2Jul 1, 2003
Method and apparatus for determining the amount of hydrogen in a vessel
MOTOROLA INC34 citations93
US6586124B2Jul 1, 2003
Method and apparatus for cold temperature operation of fuel cells utilizing hydrides having different heat capacities
MOTOROLA INC24 citations93
US6426158B1Jul 30, 2002
Method of diluting hydrogen gas exhausted from a fuel cell
MOTOROLA INC32 citations93
US6322918B1Nov 27, 2001
Water management system for fuel cells
MOTOROLA INC29 citations93
US5818005AOct 6, 1998
Electrical discharge machining electrode and rapid method for fabricating same
MOTOROLA INC37 citations93
US5689403ANov 18, 1997
Intercooled electronic device
MOTOROLA INC70 citations93
US7688835B2Mar 30, 2010
Dynamic wireless backhaul
MOTOROLA INC21 citations92
US6176953B1Jan 23, 2001
Ultrasonic welding process
MOTOROLA INC48 citations92
US5977690ANov 2, 1999
Piezoelectric switch apparatus for a communication device
MOTOROLA INC21 citations92
US7024162B2Apr 4, 2006
Communication system with call quality indication and method of operation therein
MOTOROLA INC21 citations91
US7233679B2Jun 19, 2007
Microphone system for a communication device
MOTOROLA INC20 citations88
US7132192B2Nov 7, 2006
Fuel cell using variable porosity gas diffusion material
MOTOROLA INC14 citations84
US6869708B2Mar 22, 2005
Means for measuring the liquid level in a reservoir for a fuel cell
MOTOROLA INC18 citations84
US6015970AJan 18, 2000
Switch assembly incorporating optical control function
MOTOROLA INC16 citations80
US6756142B2Jun 29, 2004
Fuel cell using non-linear positive temperature coefficient material
MOTOROLA INC5 citations74
US6743543B2Jun 1, 2004
Fuel cell using variable porosity gas diffusion material
MOTOROLA INC7 citations74
US7282283B2Oct 16, 2007
Method and device for limiting crossover in fuel cell systems
MOTOROLA INC5 citations71
US6936361B2Aug 30, 2005
Method for humidifying a fuel stream for a direct methanol fuel cell
MOTOROLA INC10 citations71
US7184756B2Feb 27, 2007
Wireless communication device with tamper resistant configuration settings
MOTOROLA INC6 citations63
US7108931B2Sep 19, 2006
Fuel cell using non-linear positive temperature coefficient material
MOTOROLA INC2 citations63
US6986957B2Jan 17, 2006
Fuel cell system
MOTOROLA INC2 citations62
US6943777B2Sep 13, 2005
Electronic device with user interface capability and method therefor
MOTOROLA INC3 citations62
US7049015B2May 23, 2006
Method of operating a fuel cell power source
MOTOROLA INC6 citations61
US6853368B2Feb 8, 2005
Electronic device with improved user interface
MOTOROLA INC5 citations57
US5933765AAug 3, 1999
Communication device having a reduced level of hazardous substances
MOTOROLA INC5 citations57
US6926990B2Aug 9, 2005
Fuel cell having porous electrodes and method for forming same
MOTOROLA INC0 citations52
US6888607B2May 3, 2005
Rewritable sign system
MOTOROLA INC0 citations51
US7264896B2Sep 4, 2007
Two-stage hybrid gas pressure regulator
MOTOROLA INC1 citations49