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Kenneth W. Colvin
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Houston, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Offshore drilling system
Patent number
6,325,159
Issue date
Dec 4, 2001
Hydril Company
Charles P. Peterman
E21 - EARTH DRILLING MINING
Information
Patent Grant
Rotating subsea diverter
Patent number
6,230,824
Issue date
May 15, 2001
Hydril Company
Charles P. Peterman
E21 - EARTH DRILLING MINING
Information
Patent Grant
Subsea mud pump with reduced pulsation
Patent number
6,102,673
Issue date
Aug 15, 2000
Hydril Company
Keith C. Mott
E21 - EARTH DRILLING MINING
Information
Patent Grant
Blowout preventer ram for coil tubing
Patent number
5,575,451
Issue date
Nov 19, 1996
Hydril Company
Kenneth W. Colvin
E21 - EARTH DRILLING MINING
Information
Patent Grant
Position instrumented blowout preventer
Patent number
5,407,172
Issue date
Apr 18, 1995
Hydril Company
Kenneth D. Young
E21 - EARTH DRILLING MINING
Information
Patent Grant
Position instrumented blowout preventer
Patent number
5,320,325
Issue date
Jun 14, 1994
Hydril Company
Kenneth D. Young
E21 - EARTH DRILLING MINING
Information
Patent Grant
Annular blowout preventer packing unit
Patent number
4,605,195
Issue date
Aug 12, 1986
Hydril Company
James A. Burton
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for a surface control system for: subsurface s...
Patent number
4,082,147
Issue date
Apr 4, 1978
Hydril Company
Danny K. Wolff
E21 - EARTH DRILLING MINING