Growing community of inventors

Centennial, CO, United States of America

David Earle Johnston

Average Co-Inventor Count = 3.00

ph-index = 1

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 = 1

David Earle JohnstonStewart Arthur Levin (1 patent)David Earle JohnstonDaniel J Grygier (1 patent)David Earle JohnstonDavid Earle Johnston (1 patent)Stewart Arthur LevinStewart Arthur Levin (8 patents)Daniel J GrygierDaniel J Grygier (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Landmark Graphics Corporation (1 from 607 patents)


1 patent:

1. 7450468 - Methods, systems, and computer readable media for interactively determining parameters for ocean-bottom hydrophone/geophone receiver combination deghosting

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12/20/2025
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