UNITED AIR SPECIALISTS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
 
 
B01D SEPARATION 6128
 
 
 
B03C MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS 219
 
 
 
B05B SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 262
 
 
 
B08B CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL 256

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0225,109 NESTED FILTER FOR USE IN A MIST COALESCER UNITFeb 10, 16Aug 10, 17[B01D]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9718018 Filter cleaning system and methodMay 23, 14Aug 01, 17[B08B, B01D]
8864913 Filter cleaning system and methodJul 23, 10Oct 21, 14[B08B, B01D]
8486172 Filter element arrangement and end cap interface featureNov 07, 08Jul 16, 13[B01D]
8430941 Filter element arrangement and portable air cleaner incorporating sameNov 07, 08Apr 30, 13[B01D]
6902592 Apparatus and method for cleaning an air filter unitOct 25, 02Jun 07, 05[B01D]
5474599 Apparatus for electrostatically cleaning particulates from airJul 07, 94Dec 12, 95[B03C]
5441204 Electrostatic fluid distribution nozzleJul 15, 94Aug 15, 95[B05B]
5330559 Method and apparatus for electrostatically cleaning particulates from airAug 11, 92Jul 19, 94[B03C]
5209410 Electrostatic dispensing nozzle assemblyMar 05, 92May 11, 93[B05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0049,810 DUST FILTRATION BAG AND FRAME APPARATUS AND METHODAbandonedAug 23, 07Feb 26, 09[B01D]
5556448 Electrostatic precipitator that operates in conductive grease atmosphereExpiredJan 10, 95Sep 17, 96[B03C]
5503336 High volume - low volume electrostatic dispensing nozzle assemblyExpiredJul 14, 94Apr 02, 96[B05B]
4781736 Electrostatically enhanced HEPA filterExpiredNov 20, 86Nov 01, 88[B03C]
4484396 Oxygen reduction system and condenser apparatus with automatic defrostExpiredJun 03, 80Nov 27, 84[F26B]
4484451 Two-stage gas condenser with feedback coolingExpiredJun 09, 80Nov 27, 84[F28B]
D268282 Fume capture hoodExpiredJul 07, 80Mar 15, 83[D230]
4365480 Process gas treating apparatusExpiredAug 11, 80Dec 28, 82[F25D]
4351648 Electrostatic precipitator having dual polarity ionizing cellExpiredSep 24, 79Sep 28, 82[B03C]
4335414 Automatic reset current cut-off for an electrostatic precipitator power supplyExpiredOct 30, 80Jun 15, 82[H02H]
4318337 Source capture fume reduction apparatusExpiredJul 07, 80Mar 09, 82[B08B]
4318152 Digital high voltage monitor and display for electrostatic precipitatorsExpiredOct 05, 79Mar 02, 82[B03C, H02H]
4240809 Electrostatic precipitator having traversing collector washing mechanismExpiredApr 11, 79Dec 23, 80[B03C]
4231766 Two stage electrostatic precipitator with electric field induced airflowExpiredDec 11, 78Nov 04, 80[B03C]

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