OILFIELD EQUIPMENT DEVELOPMENT CENTER LIMITED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 1383
 
  
 
F04B POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS 557
 
  
 
F04D NON-POSITIVE-DISPLACEMENT PUMPS569
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 4103
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 3130
 
  
 
F01D NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES 164
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS149
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100
 
  
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 183
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 1446

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0344,245 ENCAPSULATED ROTOR FOR PERMANENT MAGNET SUBMERSIBLE MOTORApr 22, 16Nov 24, 16[H02K, F04B, F04D, E21B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9702232 Rod driven centrifugal pumping system for adverse well productionApr 30, 14Jul 11, 17[F04D, E21B]
9366240 Surface pump assemblyDec 03, 12Jun 14, 16[F04B, F04D]
9322399 Encapsulated rotor for permanent magnet submersible motorJul 25, 12Apr 26, 16[H02K, F04B]
9260954 Linear electric motor for artificial lift systemMar 08, 13Feb 16, 16[H02K, E21B]
8960273 Artificial lift system for well productionSep 25, 12Feb 24, 15[F04D, E21B]
8672641 Electric submersible pumpsJun 21, 04Mar 18, 14[F04B]
8196657 Electrical submersible pump assemblyApr 30, 08Jun 12, 12[E21B]
8076898 Method of brushless DC motor control and its applicationFeb 08, 06Dec 13, 11[H02P, G05B]
7971650 Electric submersible pumpsJun 21, 04Jul 05, 11[E21B]
7726997 Electrical connector and socket assembliesAug 31, 07Jun 01, 10[H01R]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0077,966 POWER LINE COMMUNICATION SYSTEMAbandonedNov 22, 13Mar 20, 14[E21B]
8593266 Power line communication systemExpiredJul 07, 04Nov 26, 13[H04M]
7666013 Adapter for motor lead extension to electric submersible pumpExpiredOct 20, 08Feb 23, 10[H01R]
7632124 Electrical connector and socket assemblies for submersible assemblyExpiredAug 07, 08Dec 15, 09[H01R]
2009/0133,882 METHOD AND APPARATUS FOR DOWNHOLE ARTIFICIAL LIFT SYSTEM PROTECTIONAbandonedFeb 02, 09May 28, 09[E21B]
2008/0286,131 ELECTRIC SUBMERSIBLE PUMPSAbandonedJul 31, 08Nov 20, 08[F04B]
2007/0086,906 Surface pump assemblyAbandonedOct 14, 05Apr 19, 07[F04B]
6937923 Controller system for downhole applicationsExpiredNov 01, 00Aug 30, 05[G05D]

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