P

Inventor

ESTES ROY D

US13 patents
⚠️ This page may combine multiple inventors who share the name “ESTES ROY D”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ROCK BIT INTERNATIONAL INC

4 patents
US5197555AMar 30, 1993

Rock bit with vectored inserts

ROCK BIT INTERNATIONAL INC118 citations97
US5145016ASep 8, 1992

Rock bit with reaming rows

ROCK BIT INTERNATIONAL INC91 citations95
US5244050ASep 14, 1993

Rock bit with offset tool port

ROCK BIT INTERNATIONAL INC49 citations92
US5454437AOct 3, 1995

Roller cone core bit

ROCK BIT INTERNATIONAL INC7 citations73

ROCK BIT IND INC

3 patents
US5074367ADec 24, 1991

Rock bit with improved shank protection

ROCK BIT IND INC61 citations95
US4730681AMar 15, 1988

Rock bit cone lock and method

ROCK BIT IND INC36 citations91
US4537409AAug 27, 1985

Radial rock bit seal

ROCK BIT IND INC7 citations65

ROCK BIT L P

2 patents
US6902014B1Jun 7, 2005

Roller cone bi-center bit

ROCK BIT L P81 citations96
US6904984B1Jun 14, 2005

Stepped polycrystalline diamond compact insert

ROCK BIT L P113 citations93

ROCK BIT INTERNAT

1 patent
US6745858B1Jun 8, 2004

Adjustable earth boring device

ROCK BIT INTERNAT66 citations93

EXXON PRODUCTION RESEARCH CO

1 patent
US5145017ASep 8, 1992

Kerf-cutting apparatus for increased drilling rates

EXXON PRODUCTION RESEARCH CO121 citations93

ROCK BIT INTERNATIONAL L P

1 patent
US7025155B1Apr 11, 2006

Rock bit with channel structure for retaining cutter segments

ROCK BIT INTERNATIONAL L P22 citations88

ESTES ROY D

1 patent
US4911252AMar 27, 1990

Rock bit loose cone indicator

ESTES ROY D21 citations78