Growing community of inventors

Birmingham, AL, United States of America

Karl Hopfensperger

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 = 0

Karl HopfenspergerPatrick J Evans (1 patent)Karl HopfenspergerKarl Hopfensperger (1 patent)Patrick J EvansPatrick J Evans (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Cdm Smith Inc. (1 from 3 patents)


1 patent:

1. 8550750 - Bioremediation process using liquefied petroleum gas

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as of
12/19/2025
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