LUFKIN INDUSTRIES, LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 1680
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 862
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 557
 
  
 
G01V GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS 476
 
  
 
G01F MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME 257
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 155
 
  
 
F01B MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES 126
 
  
 
F04C ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS 146
 
  
 
F16H GEARING199
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0186,749 IMPROVED STATOR ASSEMBLY FOR PROGRESSIVE CAVITY PUMPING SYSTEMSJul 29, 14Jun 30, 16[F04C]
2015/0275,651 REAL-TIME PUMP DIAGNOSTIC ALGORITHMS AND APPLICATION THEREOFNov 19, 13Oct 01, 15[E21B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9725995 Bottle chamber gas lift systems, apparatuses, and methods thereofJun 10, 14Aug 08, 17[E21B]
9617837 Hydraulic oil well pumping apparatusJan 14, 14Apr 11, 17[E21B]
9618048 Reverse bypass cooling for tilted pad journal and tilting pad thrust bearingsAug 12, 14Apr 11, 17[F16C]
9587672 Adjustable offset pivot journal padAug 11, 15Mar 07, 17[B23P, F16C]
9541436 Distributed two dimensional fluid sensorNov 21, 12Jan 10, 17[G01N, G01D, E21B, G01F]
9534634 Bearing system for dynamically varying loadsSep 30, 14Jan 03, 17[F16C]
9410572 Five-axial groove cylindrical journal bearing with pressure dams for bi-directional rotationMay 12, 14Aug 09, 16[F16C]
9115574 Low profile rod pumping unit with pneumatic counterbalance for the active control of the rod stringNov 08, 12Aug 25, 15[F04B, E21B]
9013322 Real-time onsite internet communication with well manager for constant well optimizationApr 09, 07Apr 21, 15[G08B, G05B, E21B, G01V]
8894286 Bridge spring centering device for squeeze film dampersNov 23, 11Nov 25, 14[F16C, F16F]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0332,227 GAS-LIFT VALVE AND METHOD OF USEAbandonedMay 08, 14Nov 13, 14[E21B]
2014/0188,292 Methods, Systems, and Computer Readable Media for Sectional-Based Speed Control of a Linear PumpAbandonedSep 24, 13Jul 03, 14[F04B]

Top Inventors for This Owner

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