Parkson Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 11123
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 1045
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 438
 
  
 
B03B SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS 27
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 166

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0319,987 METHOD AND APPARATUS FOR SEPARATING SOLID IMPURITIES FROM A FLUIDMay 22, 17Nov 09, 17[B01D]
2015/0266,759 WASTEWATER TREATMENT APPARATUS WITH DUAL-LEVEL CONTROLMar 19, 15Sep 24, 15[C02F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9656188 Method and apparatus for separating solid impurities from a fluidDec 23, 14May 23, 17[B01D]
9616366 Care-free pumped or gravity flow rotating drum screen with stationary stabilization pad assembliesMar 13, 13Apr 11, 17[B01D, E04H]
8945401 Method and apparatus for separating solid impurities from a fluidAug 09, 12Feb 03, 15[B01D]
8771521 Method and computer program product for treating liquid containing impuritiesAug 02, 10Jul 08, 14[G05D, C02F, B01D]
8696896 Apparatus for treating liquid containing impuritiesAug 02, 10Apr 15, 14[B01D]
8658031 Method and apparatus for treating liquid containing impuritiesAug 02, 10Feb 25, 14[C02F, B01D]
8636149 Method and apparatus for washing sandMar 04, 10Jan 28, 14[B03B]
8123201 Flexible aeration panel and methods of useJul 15, 10Feb 28, 12[B01F]
8034243 Denitrification processJun 18, 10Oct 11, 11[C02F]
8025796 Denitrification systemJan 27, 10Sep 27, 11[C02F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0216,995 APPARATUS FOR TREATING LIQUID CONTAINING IMPURITIESAbandonedApr 04, 14Aug 07, 14[B01D]
2013/0264,296 FILTERING APPARATUS FOR REMOVING SOLID MATERIAL FROM A FLUID IN A CHANNELAbandonedMar 13, 13Oct 10, 13[B01D]
2013/0154,132 LIFTABLE AERATION ASSEMBLY AND METHODS OF PLACING AN AERATION ASSEMBLY INTO A RECEPTACLEAbandonedDec 04, 12Jun 20, 13[B01F]
2009/0026,152 MODULAR FILTER AND VACUUM HEAD ASSEMBLY FOR A FILTERING APPARATUSAbandonedJun 19, 08Jan 29, 09[B01D]
2008/0302,724 METHOD AND APPARATUS FOR REMOVING IMPURITIES IN REJECTS FROM SEQUENTIAL FILTERS USING SEPARATE TREATMENT UNITSAbandonedDec 28, 07Dec 11, 08[B01D]
2008/0179,244 DRAIN-FLUSH SEQUENCE AND SYSTEM FOR FILTER MODULEAbandonedJan 26, 07Jul 31, 08[C02F, B01D]
6733670 Apparatus and method for rehabilitating a traveling bridge filter underdrainExpiredFeb 14, 01May 11, 04[B01D]
6689277 Treatment of liquids with ballasted flocculationExpiredOct 30, 02Feb 10, 04[B01D]
6517714 Treatment of liquids with ballasted flocculationExpiredApr 30, 01Feb 11, 03[B01D]
6234323 Header for a sludge removal systemExpiredOct 08, 99May 22, 01[B01D]
6048132 Filter underdrain with prefabricated cellsExpiredJul 27, 98Apr 11, 00[E02B, B01D]
5891335 Filtration system with traveling plenumExpiredJan 04, 96Apr 06, 99[B01D]
5234600 Apparatus and method for automatically controlling the permeability of a traveling bridge filter systemExpiredApr 22, 92Aug 10, 93[B01D]
5015421 Diffusion deviceExpiredJun 15, 89May 14, 91[B01F]
4882068 Method and apparatus for removing liquid from suspensionsExpiredMay 02, 88Nov 21, 89[B01D]
4624781 Air diffusion device for aerating water with small bubblesExpiredAug 12, 85Nov 25, 86[C02F]
4474714 Diffuser apparatusExpiredJul 15, 83Oct 02, 84[B01F]
4472273 Filter lift systemExpiredApr 09, 82Sep 18, 84[B01D]
4323451 Array of filter elementsExpiredMay 30, 78Apr 06, 82[B01D]
4243616 Air diffuserExpiredFeb 15, 79Jan 06, 81[B01F]

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