PERMA-FIX ENVIRONMENTAL SERVICES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
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 APPARATUS313
 
  
 
G21F PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR 319
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 2107
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 237
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 253
 
  
 
B09B DISPOSAL OF SOLID WASTE 110
 
  
 
B09C RECLAMATION OF CONTAMINATED SOIL 18
 
  
 
C01F COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS 120
 
  
 
C08B POLYSACCHARIDES; DERIVATIVES THEREOF 130
 
  
 
C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS 1115

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2015/0139,870 PREPARATION OF CHITOSAN-BASED MICROPOROUS COMPOSITE MATERIAL AND ITS APPLICATIONSNov 19, 14May 21, 15[G21F, B01J]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9381552 Method and apparatus for recovering subsurface free mercury and decontaminating a substrateMar 13, 14Jul 05, 16[B09C, B09B, E21B, E21C]
8911695 Preparation of chitosan-based microporous composite material and its applicationsMar 19, 12Dec 16, 14[G21F, C08B, B01J, C01G, C01F, C08L, C02F]
8492607 Treatment of chemical agent hydrolysatesMay 01, 07Jul 23, 13[A62D, B01D]
6911570 Method for fixating sludges and soils contaminated with mercury and other heavy metalsNov 28, 01Jun 28, 05[A62D]
6743963 Methods for the prevention of radon emissionsDec 16, 99Jun 01, 04[G21F]
6403044 Method and apparatus for stabilizing liquid elemental mercuryFeb 26, 99Jun 11, 02[A62D, C01G]
6251283 Methods for removing selenium from a waste streamSep 03, 99Jun 26, 01[C02F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7442848 Treatment of chemical agent hydrolysatesExpiredAug 16, 04Oct 28, 08[A62D]
2002/0071,786 Continuous emissions monitor for measuring organic constituentsAbandonedDec 07, 00Jun 13, 02[G01N]
5622103 Disposal assembly for fluid filtration devicesExpiredFeb 28, 95Apr 22, 97[B30B]

Top Inventors for This Owner

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