Growing community of inventors

Edmonton, Canada

Robert B Logan

Average Co-Inventor Count = 2.00

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 = 22

Robert B LoganGerald V Chalifoux (2 patents)Robert B LoganRobert B Logan (2 patents)Gerald V ChalifouxGerald V Chalifoux (7 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Petrospec Engineering Ltd. (2 from 8 patents)


2 patents:

1. 7561776 - Method of preventing hydrogen darkening of optic fibre

2. 7290601 - Braided thermocouple cable bundle

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as of
1/10/2026
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