WEATHERFORD ARTIFICIAL LIFT 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 393
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 2204
 
  
 
B01D SEPARATION 1133
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 158

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6292756 Narrow band infrared water fraction apparatus for gas well and liquid hydrocarbon flow stream useMar 21, 00Sep 18, 01[G01N, G01F]
6076049 Narrow band infrared water cut meterFeb 26, 98Jun 13, 00[G01N]
6017379 Cartridge filterApr 29, 98Jan 25, 00[B01D]
5769161 Polished rod for oil well pumpingAug 22, 96Jun 23, 98[E21B]
5549156 Shock absorber & WiperJun 06, 95Aug 27, 96[E21B]
5346004 Environmentally secure polished rod liner headApr 13, 93Sep 13, 94[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2012/0292,021 Rod Guide With Wrapping VanesAbandonedMay 19, 11Nov 22, 12[E21B]
2012/0168,149 Progressive Cavity Pump Rod GuideAbandonedJan 04, 11Jul 05, 12[E21B]
2011/0079,960 Multi-Piece Pressure Operated Rings for a Downhole Pump PlungerAbandonedOct 07, 09Apr 07, 11[E21B]
5105085 Fluid analysis systemExpiredJun 04, 90Apr 14, 92[G01N]
5035581 Fluid level monitoring and control systemExpiredNov 17, 89Jul 30, 91[F04B]
4631970 Pumping unitExpiredApr 22, 83Dec 30, 86[F04B]

Top Inventors for This Owner

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