CHA CORPORATION

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 3131
 
  
 
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

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8431083 Microwave induced destruction of siloxanes and hydrogen sulfide in biogasFeb 03, 12Apr 30, 13[B01D]
7641874 Microwave induced destruction of impurities from biogas and nitrogen oxides from engine exhaustJan 14, 08Jan 05, 10[C01B, A62D, B01D]
6207023 Process for microwave air purificationFeb 12, 99Mar 27, 01[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0108,879 MICROWAVE DISPOSAL SYSTEM FOR HAZARDOUS SUBSTANCESAbandonedNov 01, 10May 03, 12[A62D, B01J]
2010/0143,209 MICROWAVE INDUCED DESTRUCTION OF IMPURITIES FROM BIOGAS AND NITROGEN OXIDES FROM ENGINE EXHAUSTAbandonedNov 18, 09Jun 10, 10[B01J, B01D]
6284202 Device for microwave removal of NOx from exhaust gasExpiredApr 17, 00Sep 04, 01[B01J]

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