Growing community of inventors

Denver, CO, United States of America

Dennis E Petticrew

Average Co-Inventor Count = 2.00

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 = 4

Dennis E Petticrew ↔ J William Fishback (1 patent)Dennis E PetticrewDennis E Petticrew (1 patent)J William FishbackJ William Fishback (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. The Superior Oil Company (1 from 14 patents)


1 patent:

1. 4257878 - Beneficiation process for oil shale

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12/21/2025
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