Assignee

ENVIROTEST SYSTEMS INC

US·2 granted patents·177 citations·filing 1996–1997

Technology mixG01M2

Top patents by PatentIndex Score

2 records

0192US5835871AMethod and system for diagnosing and reporting failure of a vehicle emission testENVIROTEST SYSTEMS INC·Filed 1997·Granted Nov 10, 1998·150 cites·20 claims
0266US5739413AForced dilution system and method for emissions measurement systemsENVIROTEST SYSTEMS INC·Filed 1996·Granted Apr 14, 1998·27 cites·18 claims

Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →