Growing community of inventors

Brookfield, WI, United States of America

William L Zahn

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 = 45

William L ZahnFred W Kufrin (1 patent)William L ZahnWilliam L Zahn (1 patent)Fred W KufrinFred W Kufrin (5 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Schwaab, Inc. (1 from 11 patents)


1 patent:

1. 4534471 - Stamp holding clip and rack therefor

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12/19/2025
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