CAMCO INTERNATIONAL (UK) 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 1284

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6606923 Design method for drillout bi-center bitsFeb 11, 02Aug 19, 03[E21B]
6484822 Cutting structure for earth boring drill bitsFeb 22, 01Nov 26, 02[E21B]
6484825 Cutting structure for earth boring drill bitsAug 16, 01Nov 26, 02[E21B]
6454028 Wear resistant drill bitJan 04, 01Sep 24, 02[E21B]
6439327 Cutting elements for rotary drill bitsAug 24, 00Aug 27, 02[E21B]
6427792 Active gauge cutting structure for earth boring drill bitsJul 06, 00Aug 06, 02[E21B]
6394200 Drillout bi-center bitSep 11, 00May 28, 02[E21B]
6151960 Method of determining characteristics of a rotary drag-type drill bitSep 24, 98Nov 28, 00[E21B]
6092613 Rotary drill bitsDec 09, 98Jul 25, 00[E21B]
6082474 Elements faced with superhard materialJun 16, 98Jul 04, 00[E21B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2002/0020,565 Multi-directional cutters for drillout bi-center drill bitsAbandonedAug 03, 01Feb 21, 02[E21B]
2001/0020,551 Rotary drag-type drill bits and methods of designing such bitsAbandonedMar 09, 01Sep 13, 01[E21B]
2001/0017,224 Method of applying a wear-resistant layer to a surface of a downhole componentAbandonedMar 09, 01Aug 30, 01[E21B]
4907662 Rotary drill bit having improved mounting means for multiple cutting elementsExpiredAug 13, 87Mar 13, 90[E21B]
4848489 Drag drill bit having improved arrangement of cutting elementsExpiredNov 07, 88Jul 18, 89[E21B]
4830123 Mounting means for cutting elements in drag type rotary drill bitExpiredJun 12, 87May 16, 89[E21B]
4682663 Mounting means for cutting elements in drag type rotary drill bitExpiredFeb 18, 86Jul 28, 87[E21B]

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