BHA GROUP, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F02C GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS 158

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8479489 Turbine exhaust recirculationAug 27, 09Jul 09, 13[F02C]
D435640 Combined cartridge filter and tube frame structureAug 26, 99Dec 26, 00[2304]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0252,757 HELICAL STRAPPING METHOD FOR HIGH TEMP PLEATED FILTERSAbandonedApr 20, 10Oct 20, 11[B01D]
2011/0209,612 UTILIZATION OF POWDERED SORBENT FOR MERCURY CONTROL FROM COAL-FIRED POWER PLANTSAbandonedApr 15, 11Sep 01, 11[B03C, B01D]
2009/0273,111 METHOD OF MAKING A WIND TURBINE ROTOR BLADEAbandonedApr 30, 08Nov 05, 09[B29C]
2009/0220,764 OLEOPHOBIC LAMINATED ARTICLE AND METHODAbandonedFeb 29, 08Sep 03, 09[B29C, B32B]
2009/0211,581 RESPIRATORY MASK WITH MICROPOROUS MEMBRANE AND ACTIVATED CARBONAbandonedFeb 26, 08Aug 27, 09[A62B]
2008/0272,048 Filter cartridge media retention systemAbandonedMay 01, 07Nov 06, 08[B01D]
7438736 Filter bag structureExpiredJun 21, 07Oct 21, 08[B01D]
2008/0229,927 Filter cleaning control system and methodAbandonedMar 23, 07Sep 25, 08[B01D]
2008/0060,328 Filter and filter mediaAbandonedSep 12, 06Mar 13, 08[B01D]
2008/0022,855 Filter cleaning system and methodAbandonedJul 26, 06Jan 31, 08[B01D]
2006/0252,333 Protective cover fabricAbandonedMay 06, 05Nov 09, 06[B32B]
2005/0129,925 Treatment of porous articleAbandonedFeb 01, 05Jun 16, 05[B32B]
6839251 Apparatus and method for filtering voltage for an electrostatic precipitatorExpiredAug 21, 03Jan 04, 05[B03C, H02M]
6676722 Air filter assembly capable of top and bottom loadingExpiredAug 21, 02Jan 13, 04[B01D]
2003/0192,294 Filter mediumAbandonedApr 16, 02Oct 16, 03[B01D]
6440188 Air filter assembly capable of top and bottom loadingExpiredNov 07, 00Aug 27, 02[B01D]
6375698 Long filter assembly with connection deviceExpiredJun 14, 00Apr 23, 02[B01D]
6203591 Baghouse, long filter assembly and method of installationExpiredSep 30, 98Mar 20, 01[B01D]
6110249 Filter element with membrane and bicomponent substrateExpiredMar 26, 99Aug 29, 00[B01D]
6018819 Garment with moisture vapor transmissive wind barrier panelsExpiredApr 15, 98Feb 01, 00[A41D]

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