Inventor
ROBERTS DONALD L
22 patents
⚠️ This page may combine multiple inventors who share the name “ROBERTS DONALD L”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
REYNOLDS TOBACCO CO R
11 patentsUS4947874AAug 14, 1990
Smoking articles utilizing electrical energy
REYNOLDS TOBACCO CO R1,438 citations98
US4947875AAug 14, 1990
Flavor delivery articles utilizing electrical energy
REYNOLDS TOBACCO CO R1,185 citations98
US4922901AMay 8, 1990
Drug delivery articles utilizing electrical energy
REYNOLDS TOBACCO CO R1,304 citations98
US4729391AMar 8, 1988
Microporous materials in cigarette filter construction
REYNOLDS TOBACCO CO R141 citations98
US4819665AApr 11, 1989
Aerosol delivery article
REYNOLDS TOBACCO CO R538 citations97
US4986286AJan 22, 1991
Tobacco treatment process
REYNOLDS TOBACCO CO R600 citations95
US4638820AJan 27, 1987
Puff control cigarette
REYNOLDS TOBACCO CO R60 citations92
US4949736AAug 21, 1990
Variable ventilation mouthpiece for a smoking article
REYNOLDS TOBACCO CO R36 citations91
US4867182ASep 19, 1989
Temperature/humidity controlled valve for a smoking article
REYNOLDS TOBACCO CO R29 citations91
US4643205AFeb 17, 1987
Smoking product
REYNOLDS TOBACCO CO R41 citations91
US3996940ADec 14, 1976
Tobacco product
REYNOLDS TOBACCO CO R0 citations48
TRAPTEC CORP
6 patentsUS6600417B2Jul 29, 2003
Graffiti detection system and method of using the same
TRAPTEC CORP48 citations95
US6288643B1Sep 11, 2001
Graffiti detection system and method of using the same
TRAPTEC CORP58 citations95
US6281787B1Aug 28, 2001
Vehicle tire leak detection system and method of using the same
TRAPTEC CORP63 citations95
US6281792B1Aug 28, 2001
Firearm shot detection system and method of using the same
TRAPTEC CORP48 citations95
US7064664B2Jun 20, 2006
Graffiti detection system and method of using the same
TRAPTEC CORP18 citations91
US6961002B2Nov 1, 2005
Sonic detection system and method of using the same
TRAPTEC CORP5 citations61