Q.E.D. ENVIRONMENTAL SYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 1977
 
  
 
B09B DISPOSAL OF SOLID WASTE 56
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 5201
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING370
 
  
 
B01F MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING 240
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS272
 
  
 
F04F PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED 212
 
  
 
B01D SEPARATION 1133
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 161

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2018/0058,464 Pump Having Edge Mounted O-Ring SealAug 07, 17Mar 01, 18[F04D, E21B]
2016/0298,632 Groundwater Sampling PumpDec 03, 14Oct 13, 16[F04D, E03B, E21B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9909598 Well monitoring and pressure controlled landfill pumpFeb 23, 15Mar 06, 18[F04F, E21B, G01V]
9850741 Interchangeable orifice plate wellhead systemJun 09, 15Dec 26, 17[F16K, E21B]
9695945 Fine control gas valveJun 04, 14Jul 04, 17[F16K]
9587483 Landfill well liquid level control pumpFeb 16, 15Mar 07, 17[F04F, E21B]
9316082 Well cap assemblyFeb 05, 13Apr 19, 16[E21B]
9062510 Interchangeable orifice plate wellhead systemJul 11, 14Jun 23, 15[F16K, E21B]
8800597 Fine control gas valveApr 15, 11Aug 12, 14[F16K]
8756991 Pneumatic indicator for detecting liquid levelOct 26, 10Jun 24, 14[G01F]
8678348 Gas flow control valveAug 16, 13Mar 25, 14[F16K]
8678353 Fluid inlet and distribution system for volatile organic compound removal deviceJan 19, 11Mar 25, 14[B01F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0180,703 REMOVABLE ORIFICE PLATE DEVICEAbandonedJan 09, 13Jul 18, 13[E21B]
2011/0176,865 CAM-BOLT ASSEMBLYAbandonedJan 21, 10Jul 21, 11[F16B]
7347255 Device for detecting water in product-only pump flow streamExpiredMar 28, 05Mar 25, 08[E21B]
2006/0018,776 Piston pumpAbandonedOct 11, 05Jan 26, 06[F04B]
6045336 Pump and valve for leachate extraction of heavier than water fluidsExpiredApr 28, 98Apr 04, 00[F16K, E03B, F04F]
6039546 Float operated pneumatic pump to separate hydrocarbon from waterExpiredSep 29, 97Mar 21, 00[F04B, F04F]
5971715 Pneumatic pump having radial ball check valve arrayExpiredApr 25, 97Oct 26, 99[F04F]
5944490 Pneumatically operated submersible pump with float controlExpiredNov 12, 96Aug 31, 99[F04F]
5704772 Controller less resilient bladder pump for reduced diameter casing with long cycleExpiredNov 08, 95Jan 06, 98[F04B]
5549157 Electronic counter with pump-mounted sensor for cycle indicationExpiredOct 24, 94Aug 27, 96[F04B, E21B]
5419191 Apparatus for counting cycles of fluid flowExpiredMar 29, 93May 30, 95[G01F]
5400650 Apparatus for counting cycles of fluid flowExpiredAug 17, 92Mar 28, 95[G01F]
5358038 Float operated pneumatic pumpExpiredSep 03, 93Oct 25, 94[F04F, E21B]
5301749 Dual pump floating layer recovery apparatusExpiredSep 16, 92Apr 12, 94[F04F, E21B]
5259450 Vented packer for sampling wellExpiredSep 17, 92Nov 09, 93[E21B]
5238060 Sampling pump with packerExpiredSep 08, 92Aug 24, 93[E21B]
5146998 Apparatus and method for underground samplingExpiredMay 11, 90Sep 15, 92[E21B]
5147184 Floating layer recovery apparatusExpiredMay 14, 90Sep 15, 92[F04B]
5141404 Pump apparatusExpiredJun 25, 90Aug 25, 92[F04F]
4998585 Floating layer recovery apparatusExpiredNov 14, 89Mar 12, 91[E21B, B01D]

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