Harbison-Fischer, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 1052
 
  
 
E21B EARTH OR ROCK DRILLING 492
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS446
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 268
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 155

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9011110 Relocatable sucker rod pump assemblyOct 24, 12Apr 21, 15[F04B, E21B]
8657014 Artificial lift system and method for wellMar 02, 11Feb 25, 14[E21B]
8579610 High compression downhole pumpApr 02, 08Nov 12, 13[F04B]
8535024 Sand plunger for downhole pumpFeb 17, 11Sep 17, 13[F04B, F01B]
8528912 Method and apparatus for injecting packing into stuffing boxes for reciprocating rodsFeb 28, 13Sep 10, 13[F16J]
8403331 Method and apparatus for injecting packing into stuffing boxes for reciprocating rodsMay 25, 05Mar 26, 13[F16J]
8297940 Relocatable sucker rod pump assemblyOct 26, 09Oct 30, 12[F04B]
8215383 Stress and torque reducing toolMay 18, 11Jul 10, 12[F04B, E21B]
8083505 Wear rings for downhole pumpSep 15, 09Dec 27, 11[F04B]
7950449 Stress and torque reducing toolJun 26, 08May 31, 11[F04B, E21B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7819189 Method and system for determining plunger location in a plunger lift systemExpiredMay 30, 07Oct 26, 10[E21B]
7270690 Separator with vane assembly and filter arrangementExpiredJul 14, 04Sep 18, 07[B01D]
6966248 Adjustable valve rod and pull tube guide for downhole pumpsExpiredJul 14, 03Nov 22, 05[F15B]
6770121 Separator with regions of differing surface tensionsExpiredSep 12, 02Aug 03, 04[B01D]
2003/0184,019 Method and apparatus for injecting packing into stuffing boxes for reciprocating rodsAbandonedMar 31, 03Oct 02, 03[E21B]
5112140 Seal assembly for reciprocating membersExpiredJan 22, 91May 12, 92[F16C]

Top Inventors for This Owner

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