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Tulsa, OK, United States of America

David Armstrong

Average Co-Inventor Count = 6.46

ph-index = 2

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 161

David Armstrong ↔ Loren C Swor (2 patents)David Armstrong ↔ Phillip M Starr (2 patents)David Armstrong ↔ Steven George Streich (1 patent)David Armstrong ↔ Donald R Smith (1 patent)David Armstrong ↔ Stephen E Tilghman (1 patent)David Armstrong ↔ Brian Keith Wilkinson (1 patent)David Armstrong ↔ Michael L Patterson (1 patent)David Armstrong ↔ Raymund Meijs (1 patent)David Armstrong ↔ Danny D Delozier (1 patent)David ArmstrongDavid Armstrong (2 patents)Loren C SworLoren C Swor (25 patents)Phillip M StarrPhillip M Starr (14 patents)Steven George StreichSteven George Streich (45 patents)Donald R SmithDonald R Smith (25 patents)Stephen E TilghmanStephen E Tilghman (14 patents)Brian Keith WilkinsonBrian Keith Wilkinson (7 patents)Michael L PattersonMichael L Patterson (4 patents)Raymund MeijsRaymund Meijs (2 patents)Danny D DelozierDanny D Delozier (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Halliburton Energy Services, Inc. (2 from 11,766 patents)


2 patents:

1. 7328750 - Sealing plug and method for removing same from a well

2. 6926086 - Method for removing a tool from a well

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12/4/2025
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