Growing community of inventors

Richmond, MI, United States of America

Frank Ludwig

Average Co-Inventor Count = 1.00

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 = 3

Frank LudwigFrank Ludwig (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. American Energy Services, Inc. (1 from 4 patents)

2. P.t.e. Inc. (1 from 1 patent)


1 patent:

1. 4640119 - Utility pole tester

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as of
12/19/2025
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