WILHELM ENVIRONMENTAL TECHNOLOGIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 1133

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5356597 In-duct flue gas conditioning systemJul 30, 92Oct 18, 94[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5791268 SO3 flue gas conditioning system with catalytic converter temperature control by injection of waterExpiredApr 10, 96Aug 11, 98[F23J]
5681375 Boiler flue gas conditioning system using dilute sulfuric acid injectionExpiredJul 16, 96Oct 28, 97[B03C]
5665142 Flue gas conditioning system and method using native SO.sub.2 feedstockExpiredNov 19, 96Sep 09, 97[B03C]
5547495 Flue gas conditioning systemExpiredMay 13, 94Aug 20, 96[F23J]
5449390 Flue gas conditioning system using vaporized sulfuric acidExpiredMar 08, 94Sep 12, 95[B03C]
5370720 Flue gas conditioning systemExpiredJul 23, 93Dec 06, 94[B01D]
5288303 Flue gas conditioning systemExpiredApr 07, 92Feb 22, 94[B03C]
5288309 Flue gas conditioning agent demand control apparatusExpiredMay 14, 92Feb 22, 94[B03C]
5240470 In-duct flue gas conditioning systemExpiredJul 01, 92Aug 31, 93[B03C, C01B]

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