Inventor
SIMMONS JOHN W
US26 patents
⚠️ This page may combine multiple inventors who share the name “SIMMONS JOHN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AIR LIQUIDE
10 patentsUS7025804B2Apr 11, 2006
Method for separating hydrocarbon-containing gas mixtures using hydrocarbon-resistant membranes
AIR LIQUIDE62 citations95
US7018445B2Mar 28, 2006
Polyimide blends for gas separation membranes
AIR LIQUIDE48 citations92
US6383258B1May 7, 2002
Copolyimide gas separation membranes
AIR LIQUIDE45 citations92
US7422623B2Sep 9, 2008
Separation membrane by controlled annealing of polyimide polymers
AIR LIQUIDE17 citations83
US6843829B2Jan 18, 2005
Block polyurethane-ether and polyurea-ether gas separation membranes
AIR LIQUIDE10 citations74
US5393323AFeb 28, 1995
Aromatic polyethersulfone gas separation membranes
AIR LIQUIDE16 citations74
US5334697AAug 2, 1994
Polyimide gas separation membranes
AIR LIQUIDE17 citations74
US5474596ADec 12, 1995
Aromatic polyetherketone gas separation membranes
AIR LIQUIDE3 citations63
US5393324AFeb 28, 1995
Aromatic polyetherketone gas separation membranes
AIR LIQUIDE4 citations63
US7399897B2Jul 15, 2008
Method of separating olefins from mixtures with paraffins
AIR LIQUIDE5 citations61
MOTOROLA INC
7 patentsUS7446434B1Nov 4, 2008
Dual mode power management system
MOTOROLA INC12 citations84
US7373125B2May 13, 2008
Off-channel signal detector with programmable hysteresis
MOTOROLA INC17 citations76
US5303405AApr 12, 1994
Comparator switched squelch rectifier
MOTOROLA INC10 citations72
US5303408AApr 12, 1994
Squelch detector
MOTOROLA INC12 citations71
US5454118ASep 26, 1995
Method and apparatus for prevention of squelch chatter
MOTOROLA INC4 citations61
US6297676B1Oct 2, 2001
High capacitance drive fast slewing amplifier
MOTOROLA INC2 citations60
US5301369AApr 5, 1994
Circuit with adjustable release time
MOTOROLA INC3 citations60
DU PONT
6 patentsUS5248319ASep 28, 1993
Gas separation membranes made from blends of aromatic polyamide, polymide or polyamide-imide polymers
DU PONT62 citations96
US5320650AJun 14, 1994
Fluorinated aromatic polyimide, polyamide and polyamide-imide gas separation membranes
DU PONT38 citations92
US5310415AMay 10, 1994
Polyimide and polyamide-imide gas separation membranes
DU PONT25 citations92
US5266100ANov 30, 1993
Alkyl substituted polyimide, polyamide and polyamide-imide gas separation membranes
DU PONT33 citations92
US5232472AAug 3, 1993
Polyimide and polyamide-imide gas separation membranes
DU PONT37 citations92
US5352273AOct 4, 1994
Alkyl substituted aromatic polyester gas separation membranes
DU PONT14 citations73