TRC ENVIRONMENTAL CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B09C RECLAMATION OF CONTAMINATED SOIL 45
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 451
 
  
 
A62D CHEMICAL MEANS FOR EXTINGUISHING FIRES; PROCESSES FOR MAKING HARMFUL CHEMICAL SUBSTANCES HARMLESS, OR LESS HARMFUL, BY EFFECTING A CHEMICAL CHANGE; COMPOSITION OF MATERIALS FOR COVERINGS OR CLOTHING FOR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; COMPOSITION OF MATERIALS FOR TRANSPARENT PARTS OF GAS-MASKS, RESPIRATORS, BREATHING BAGS OR HELMETS; COMPOSITION OF CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS115

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9884771 Device and method for trapping non-aqueous-phase liquids prior to a permeable reactive barrier for the treatment of contaminated groundwaterFeb 14, 13Feb 06, 18[B09C, C02F]
9085021 Devices and methods for trapping non-aqueous-phase liquids and venting gas from subaqueous sedimentMar 15, 13Jul 21, 15[B09C]
8651768 Devices and methods for directing migration of non-aqueous phase liquids from sedimentMar 13, 13Feb 18, 14[B09C]
8419314 Devices and methods for directing migration of non-aqueous phase liquids from sedimentApr 08, 09Apr 16, 13[B09C]
8323593 Process for solubilizing, reducing and fixing hexavalent chromium contained in chromite ore processing residue into trivalent chromiumJun 03, 11Dec 04, 12[C02F]
7497948 Method for remediation of soil and groundwaterOct 25, 05Mar 03, 09[C02F]
6254312 Stabilization of arsenic-contaminated materialsJun 18, 98Jul 03, 01[A62D]
6001252 In situ anaerobic dehalogenationJul 09, 98Dec 14, 99[C02F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7560034 Caustic solution treatment processExpiredFeb 24, 06Jul 14, 09[C02F]
7351191 Method for stabilizing contaminated wasteExpiredSep 02, 05Apr 01, 08[B09C]
7326285 Methods for recovering hydrocarbon vaporsExpiredMay 24, 05Feb 05, 08[B01D]
7005076 Caustic solution treatment processExpiredJun 06, 03Feb 28, 06[C02F]
6949197 Situ neutralization of subsurface acidic pore waterExpiredJun 06, 03Sep 27, 05[C02F]
6843617 Stabilization of toxic metals in a waste matrix and pore waterExpiredApr 07, 03Jan 18, 05[G21F, B09C, C01G]
6543964 Stabilization of arsenic-contaminated materialsExpiredDec 29, 00Apr 08, 03[A62D]

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