Growing community of inventors

Calgary, Canada

Margaret Ann Messier

Average Co-Inventor Count = 8.78

ph-index = 5

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 = 938

Margaret Ann MessierHarold J Vinegar (5 patents)Margaret Ann MessierScott Lee Wellington (5 patents)Margaret Ann MessierEric Pierre De Rouffignac (5 patents)Margaret Ann MessierJohn Michael Karanikas (5 patents)Margaret Ann MessierKevin Albert Maher (5 patents)Margaret Ann MessierMeliha Deniz Sumnu-Dindoruk (5 patents)Margaret Ann MessierBruce Roberts (5 patents)Margaret Ann MessierSteven Dexter Crane (4 patents)Margaret Ann MessierMargaret Ann Messier (5 patents)Harold J VinegarHarold J Vinegar (307 patents)Scott Lee WellingtonScott Lee Wellington (244 patents)Eric Pierre De RouffignacEric Pierre De Rouffignac (139 patents)John Michael KaranikasJohn Michael Karanikas (96 patents)Kevin Albert MaherKevin Albert Maher (62 patents)Meliha Deniz Sumnu-DindorukMeliha Deniz Sumnu-Dindoruk (11 patents)Bruce RobertsBruce Roberts (7 patents)Steven Dexter CraneSteven Dexter Crane (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Shell Oil Comapny (5 from 7,646 patents)


5 patents:

1. 8627887 - In situ recovery from a hydrocarbon containing formation

2. 7066254 - In situ thermal processing of a tar sands formation

3. 7055600 - In situ thermal recovery from a relatively permeable formation with controlled production rate

4. 6981548 - In situ thermal recovery from a relatively permeable formation

5. 6948562 - Production of a blending agent using an in situ thermal process in a relatively permeable formation

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as of
12/20/2025
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