| Patent |
Priority |
Assignee |
Title |
| 4694918, |
Apr 16 1984 |
Smith International, Inc. |
Rock bit with diamond tip inserts |
| 4936398, |
Jul 07 1989 |
CLEDISC INTERNATIONAL B V |
Rotary drilling device |
| 5007493, |
Feb 23 1990 |
DRESSER INDUSTRIES, INC , A CORP OF DE |
Drill bit having improved cutting element retention system |
| 5045092, |
May 26 1989 |
Smith International, Inc. |
Diamond-containing cemented metal carbide |
| 5138797, |
May 24 1989 |
Uniroc AB |
Grinding guide assembly for a hand-held grinding machine for buttons of a button drill bit |
| 5443565, |
Jul 11 1994 |
VERVE, L L C |
Drill bit with forward sweep cutting elements |
| 5549171, |
Aug 10 1994 |
Smith International, Inc. |
Drill bit with performance-improving cutting structure |
| 5551522, |
Oct 12 1994 |
Smith International, Inc. |
Drill bit having stability enhancing cutting structure |
| 5582261, |
Aug 10 1994 |
Smith International, Inc. |
Drill bit having enhanced cutting structure and stabilizing features |
| 5651421, |
Nov 01 1994 |
Reedhycalog UK Limited |
Rotary drill bits |
| 5746281, |
Jun 14 1993 |
Oy Robit Rocktools Ltd. |
Method for mounting hard metal buttons in a drill bit |
| 5794725, |
Apr 12 1996 |
Baker Hughes Incorporated |
Drill bits with enhanced hydraulic flow characteristics |
| 5947215, |
Nov 06 1997 |
Sandvik AB |
Diamond enhanced rock drill bit for percussive drilling |
| 6253864, |
Aug 10 1998 |
Schlumberger Technology Corporation |
Percussive shearing drill bit |
| 6361873, |
Jul 31 1997 |
SMITH INTERNATIONAL INC |
Composite constructions having ordered microstructures |
| 7441610, |
Feb 25 2005 |
SMITH INTERNATIONAL INC |
Ultrahard composite constructions |
| 7624818, |
Feb 19 2004 |
Baker Hughes Incorporated |
Earth boring drill bits with casing component drill out capability and methods of use |
| 8720609, |
Oct 13 2008 |
BAKER HUGHES HOLDINGS LLC |
Drill bit with continuously sharp edge cutting elements |
| 9140071, |
Nov 26 2012 |
NATIONAL OILWELL DHT, L P |
Apparatus and method for retaining inserts of a rolling cone drill bit |
| 20020195280, |
|
|
|
| 178899, |
|
|
|
| D265205, |
Apr 24 1980 |
|
Drill bit |
| D403335, |
Dec 01 1997 |
Dresser Industries, Inc |
Four blade drill bit |
| D403336, |
Dec 02 1997 |
Dresser Industries, Inc |
Five blade drill bit |
| D624097, |
Jun 19 2009 |
Sandvik Intellectual Property AB |
Drill bit |
| D708238, |
Jun 12 2013 |
|
Drill bit |
| D750674, |
Aug 01 2014 |
|
Milling tool |