ENVIROTEST SYSTEMS HOLDINGS CORP.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 23183
 
  
 
G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR463
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 3444
 
  
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 276
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158
 
  
 
G01P MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT 156

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9057664 System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehiclesApr 29, 13Jun 16, 15[G01M, G01N]
8838396 Remote vehicle emissions sensing system and method for differentiating water from hydrocarbonsMay 20, 13Sep 16, 14[G01N]
RE44976 Speed and acceleration monitoring device using visible laser beamsSep 22, 00Jul 01, 14[G01F]
8447528 Remote vehicle emissions sensing system and method for differentiating water from hydrocarbonsDec 21, 09May 21, 13[G01N]
RE44214 Unmanned integrated optical remote emissions sensor (RES) for motor vehiclesJun 22, 09May 14, 13[G01N]
8429957 System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehiclesJan 31, 12Apr 30, 13[G01N]
8355837 System and method for testing the integrity of a vehicle testing/diagnostic systemMay 16, 11Jan 15, 13[G06F]
8347701 System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehiclesJun 03, 11Jan 08, 13[G01N]
8266952 System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehiclesMar 21, 11Sep 18, 12[G01N]
7930931 System and method for quantifying the presence of components in the exhaust of commercial and/or heavy-duty vehiclesMay 02, 08Apr 26, 11[G01M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0033,796 SYSTEM AND METHOD FOR QUANTIFYING THE PRESENCE OF COMPONENTS IN THE EXHAUST OF COMMERCIAL AND/OR HEAVY-DUTY VEHICLESAbandonedJan 08, 13Feb 06, 14[G01M]
2013/0000,396 SYSTEM AND METHOD FOR QUANTIFYING THE PRESENCE OF COMPONENTS IN THE EXHAUST OF COMMERCIAL AND/OR HEAVY-DUTY VEHICLESAbandonedSep 14, 12Jan 03, 13[G01M]
7945358 System and method for testing the integrity of a vehicle testing/diagnostic systemExpiredAug 18, 06May 17, 11[H04B, G06F, B60Q]
7485861 System and method for remote emissions sensing including calculation and calibration techniques compensating for temperature and pressure effectsExpiredFeb 09, 05Feb 03, 09[G01N]
7400398 Remote emissions sensing system and method incorporating spectral matching by data interpolationExpiredMay 09, 06Jul 15, 08[G01N]
6841778 Method and apparatus for measuring particulates in vehicle emissionsExpiredMar 15, 02Jan 11, 05[G01N]
2003/0089,854 Apparatus and method for remotely sensing hydrocarbons and other pollutants in vehicle emissionsAbandonedNov 09, 01May 15, 03[G01N]
6307201 Method and apparatus for selecting a filter for a remote sensing deviceExpiredDec 31, 98Oct 23, 01[G01N]
5797682 Device and method for measuring temperture of vehicle exhaustExpiredJan 31, 97Aug 25, 98[G01J, G01N]
5272769 Emission system component inspection systemExpiredNov 05, 91Dec 21, 93[G06F]
5063515 Automotive engine signal digitizationExpiredJun 30, 89Nov 05, 91[G01M]
5043659 Non-intrusive tachometer for spark ignition autosExpiredDec 18, 89Aug 27, 91[G01P]
5034893 Graphical display of timing advance dataExpiredApr 10, 89Jul 23, 91[G01M, F02P]

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