Roger E. Ethridge

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Enhanced welded pipe, threaded connections, and methods for achievi...
- Patent number 11,174,685
- Issue date Nov 16, 2021
- National-Oilwell Varco, L.P.
- Roger Edward Ethridge
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Enhanced welded pipe, threaded connections, and methods for achievi...
- Patent number 10,961,787
- Issue date Mar 30, 2021
- National-Oilwell Varco, L.P.
- Roger Edward Ethridge
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electropolishing method for oil field tubular goods and drill pipe
- Patent number 6,523,615
- Issue date Feb 25, 2003
- John Gandy Corporation
- John B. Gandy
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
ENHANCED WELDED PIPE, THREADED CONNECTIONS, AND METHODS FOR ACHIEVI...
- Publication number 20210172261
- Publication date Jun 10, 2021
- National-Oilwell Varco, L.P.
- Roger Edward Ethridge
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Enhanced Welded Pipe, Threaded Connections, and Methods for Achievi...
- Publication number 20180216416
- Publication date Aug 2, 2018
- National-Oilwell Varco, L.P.
- Roger Edward Ethridge
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Electropolishing method for oil field tubular goods and drill pipe
- Publication number 20010027867
- Publication date Oct 11, 2001
- John B. Gandy
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC