Joseph L. Kelly Jr.

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Dual metal face seal with single recessed energizer
- Patent number 5,360,076
- Issue date Nov 1, 1994
- Hughes Tool Company
- Joseph L. Kelly
- E21 - EARTH DRILLING MINING
Information Patent Grant
Volume and pressure balanced rigid face seal for rock bits
- Patent number 4,753,304
- Issue date Jun 28, 1988
- Hughes Tool Company
- Joseph L. Kelly
- E21 - EARTH DRILLING MINING
Information Patent Grant
Surface acoustic wave pipe identification system
- Patent number 4,698,631
- Issue date Oct 6, 1987
- Hughes Tool Company
- Joseph L. Kelly
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Solid head bit with tungsten carbide central core
- Patent number 4,574,895
- Issue date Mar 11, 1986
- Hughes Tool Company - USA
- George E. Dolezal
- E21 - EARTH DRILLING MINING
Information Patent Grant
Air groove scraper
- Patent number 4,515,228
- Issue date May 7, 1985
- Hughes Tool Company - USA
- George E. Dolezal
- E21 - EARTH DRILLING MINING
Information Patent Grant
Non-rotating stabilizer for drill string
- Patent number 4,293,039
- Issue date Oct 6, 1981
- Hughes Tool Company
- John M. Mullins
- E21 - EARTH DRILLING MINING
Information Patent Grant
Derrick tilting system
- Patent number 3,995,701
- Issue date Dec 7, 1976
- Hughes Tool Company
- Joseph L. Kelly
- E21 - EARTH DRILLING MINING