Assignee
ENVIROTEST SYSTEMS CORP
US·15 granted patents·1,087 citations·filing 1993–2001
Top patents by PatentIndex Score
15 records- 0195US5726450AUnmanned integrated optical remote emissions sensor (RES) for motor vehiclesENVIROTEST SYSTEMS CORP·Filed 1996·Granted Mar 10, 1998·179 cites·21 claims
- 0290US5831267AMethod and apparatus for remote measurement of exhaust gasENVIROTEST SYSTEMS CORP·Filed 1997·Granted Nov 3, 1998·114 cites·24 claims
- 0389US7164132B2Multilane remote sensing deviceENVIROTEST SYSTEMS CORP·Filed 2001·Granted Jan 16, 2007·46 cites·34 claims
- 0489US5719396ASystems and methods for determining compliance of moving vehicles with emission-concentration standardsENVIROTEST SYSTEMS CORP·Filed 1996·Granted Feb 17, 1998·139 cites·32 claims
- 0589US5371367ARemote sensor device for monitoring motor vehicle exhaust systemsENVIROTEST SYSTEMS CORP·Filed 1993·Granted Dec 6, 1994·78 cites·11 claims
- 0687US6230087B1Vehicular running loss detecting systemENVIROTEST SYSTEMS CORP·Filed 2000·Granted May 8, 2001·34 cites·16 claims
- 0784US5812249ASpeed and acceleration monitoring device using visible laser beamsENVIROTEST SYSTEMS CORP·Filed 1996·Granted Sep 22, 1998·67 cites·9 claims
- 0884US5671158AApparatus and method for effecting wireless discourse between computer and technician in testing motor vehicle emission control systemsENVIROTEST SYSTEMS CORP·Filed 1995·Granted Sep 23, 1997·147 cites·33 claims
- 0982US6723989B1Remote emissions sensing system and method with a composite beam of IR and UV radiation that is not split for detectionENVIROTEST SYSTEMS CORP·Filed 2000·Granted Apr 20, 2004·22 cites·7 claims
- 1081US5425266AApparatus and method for non-intrusive testing of motor vehicle evaporative fuel systemsENVIROTEST SYSTEMS CORP·Filed 1994·Granted Jun 20, 1995·42 cites·20 claims
- 1179US5414626AApparatus and method for capturing, storing, retrieving, and displaying the identification and location of motor vehicle emission control systemsENVIROTEST SYSTEMS CORP·Filed 1993·Granted May 9, 1995·53 cites·18 claims
- 1278US5797682ADevice and method for measuring temperture of vehicle exhaustENVIROTEST SYSTEMS CORP·Filed 1997·Granted Aug 25, 1998·61 cites·15 claims
- 1376US5644133ARemote vehicle emission analyzer with light conveyance to detectors through fiber optic light tubesENVIROTEST SYSTEMS CORP·Filed 1995·Granted Jul 1, 1997·49 cites·16 claims
- 1475US6307201B1Method and apparatus for selecting a filter for a remote sensing deviceENVIROTEST SYSTEMS CORP·Filed 1998·Granted Oct 23, 2001·45 cites·9 claims
- 1547US5465614AApparatus and method for non-intrusive testing of a motor vehicle canister purge systemENVIROTEST SYSTEMS CORP·Filed 1994·Granted Nov 14, 1995·11 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →