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Rudy B. Callihan
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San Antonio, TX, US
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Patents Grants
last 30 patents
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Patent Grant
Pressure actuated pack-off and method
Patent number
4,479,544
Issue date
Oct 30, 1984
Baker Oil Tools, Inc.
Rudy B. Callihan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for well cementing through a tubular member
Patent number
4,450,912
Issue date
May 29, 1984
Baker Oil Tools, Inc.
Rudy B. Callihan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Unitary float valve and wiping plug retainer
Patent number
4,442,894
Issue date
Apr 17, 1984
Baker Oil Tools, Inc.
Rudy B. Callihan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Apparatus for well cementing through a tubular member
Patent number
4,436,151
Issue date
Mar 13, 1984
Baker Oil Tools, Inc.
Rudy B. Callihan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Method and apparatus for installing a cementing float shoe on the b...
Patent number
4,413,682
Issue date
Nov 8, 1983
Baker Oil Tools, Inc.
Rudy B. Callihan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Combination hydraulically set hanger assembly with expansion joint
Patent number
4,393,931
Issue date
Jul 19, 1983
Baker International Corporation
John F. Muse
E21 - EARTH DRILLING MINING
Information
Patent Grant
Centering device for well conduit
Patent number
4,088,186
Issue date
May 9, 1978
Baker International Corporation
Rudy B. Callihan
E21 - EARTH DRILLING MINING
Information
Patent Grant
Gravel packing apparatus and method
Patent number
3,987,854
Issue date
Oct 26, 1976
Baker Oil Tools, Inc.
Rudy B. Callihan
E21 - EARTH DRILLING MINING