Damian Leonard Ward

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
Reverse cementing valve
- Patent number 9,334,700
- Issue date May 10, 2016
- Weatherford Technology Holdings, LLC
- Andrew James Hanson
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Patents Applicationslast 30 patents

Information Patent Application
REVERSE CEMENTATION OF LINER STRING FOR FORMATION STIMULATION
- Publication number 20160024876
- Publication date Jan 28, 2016
- WEATHERFORD/LAMB, INC.
- Damian Leonard WARD
- E21 - EARTH DRILLING MINING
Information Patent Application
REVERSE CEMENTING VALVE
- Publication number 20130264068
- Publication date Oct 10, 2013
- Andrew James Hanson
- E21 - EARTH DRILLING MINING