W-N Apache Corporation

Patent Owner

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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
 
  
 
B25B TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING, OR HOLDING143
 
  
 
B66C CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES 130

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5297833 Apparatus for gripping a down hole tubular for support and rotationFeb 25, 93Mar 29, 94[B25B, B66C]
5294228 Automatic sequencing system for earth drilling machineAug 28, 91Mar 15, 94[E21B]
5273388 Lifting device for down hole tubularsJul 16, 91Dec 28, 93[E21B]
5259723 Feeding device for down hole tubularsJul 16, 91Nov 09, 93[E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0121,507 Apparatus for gripping a down hole tubular for use in a drilling machineAbandonedNov 08, 07May 14, 09[E21B]
5054550 Centering spinning for down hole tubularsExpiredMay 24, 90Oct 08, 91[B25B]
5036927 Apparatus for gripping a down hole tubular for rotationExpiredSep 19, 90Aug 06, 91[E21B]
4867236 Compact casing tongs for use on top head drive earth drilling machineExpiredOct 06, 88Sep 19, 89[E21B]
4842250 Line reeving system for earth drilling machineExpiredSep 03, 87Jun 27, 89[B66D]
4830119 Top head drive cooling systemExpiredAug 04, 88May 16, 89[E21B]
4821814 Top head drive assembly for earth drilling machine and components thereofExpiredApr 02, 87Apr 18, 89[E21B]
4821816 Method of assembling a modular drilling machineExpiredMay 10, 88Apr 18, 89[E21B]
4815546 Top head drive assembly with axially movable quillExpiredApr 02, 87Mar 28, 89[E21C]
4762187 Internal wrench for a top head drive assemblyExpiredJul 29, 87Aug 09, 88[E21B]
4759414 Modular drilling machine and components thereofExpiredMar 27, 87Jul 26, 88[E21B]
4708581 Method of positioning a transfer armExpiredDec 31, 86Nov 24, 87[E21B]
4650236 Automatic pipe elevatorExpiredMar 15, 85Mar 17, 87[B25J]
4533055 Storage rack for drilling tubularsExpiredJun 02, 82Aug 06, 85[A47F]
4522439 Automatic pipe elevatorExpiredAug 12, 83Jun 11, 85[B25J]
4511169 Self locking and unlocking elevator assemblyExpiredSep 30, 82Apr 16, 85[B66C]
4509606 Axial return hammerExpiredNov 16, 83Apr 09, 85[E21B]
4492501 Platform positioning systemExpiredApr 11, 83Jan 08, 85[E21B, E04H]
4475607 Clamp and insert for clamping drilling tubularsExpiredDec 11, 81Oct 09, 84[B65H, E21B]
4407373 Collapsible pedestal for drilling apparatusExpiredJun 01, 81Oct 04, 83[B23Q]

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