Inventor
GIFFORD WILLIAM E
US15 patents
⚠️ This page may combine multiple inventors who share the name “GIFFORD WILLIAM E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN MOTORS CORP
14 patentsUS5014742AMay 14, 1991
Vacuum actuated tank vapor vent valve
GEN MOTORS CORP46 citations96
US4917157AApr 17, 1990
Vehicle tank vapor vent valve assembly
GEN MOTORS CORP56 citations96
US4724861AFeb 16, 1988
Fuel tank venting
GEN MOTORS CORP57 citations95
US4706708ANov 17, 1987
Fuel tank venting
GEN MOTORS CORP77 citations94
US4203401AMay 20, 1980
Evaporative emissions canister
GEN MOTORS CORP65 citations94
US5253629AOct 19, 1993
Flow sensor for evaporative control system
GEN MOTORS CORP76 citations93
US5289811AMar 1, 1994
Purge control device
GEN MOTORS CORP29 citations92
USRE34518EJan 25, 1994
Vacuum actuated tank vapor vent valve
GEN MOTORS CORP21 citations92
US4732588AMar 22, 1988
Canister using thermoelectric cooler
GEN MOTORS CORP37 citations91
US4683862AAug 4, 1987
Fuel vapor storage canister
GEN MOTORS CORP27 citations91
US4714485ADec 22, 1987
Fuel vapor storage canister
GEN MOTORS CORP25 citations89
US5119791AJun 9, 1992
Vapor storage canister with liquid trap
GEN MOTORS CORP43 citations88
US4359031ANov 16, 1982
Engine air flow responsive control
GEN MOTORS CORP9 citations74
US4893643AJan 16, 1990
Tank vapor vent valve assembly with improved overfill protection
GEN MOTORS CORP18 citations72