Growing community of inventors

Aloha, OR, United States of America

Frecerick C Hahn

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 = 82

Frecerick C Hahn ↔ William R Barber, Jr (1 patent)Frecerick C Hahn ↔ David A Hampel (1 patent)Frecerick C HahnFrecerick C Hahn (1 patent)William R Barber, JrWilliam R Barber, Jr (5 patents)David A HampelDavid A Hampel (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Esco Corp. (1 from 177 patents)


1 patent:

1. 4404760 - Excavating tooth

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12/21/2025
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