Growing community of inventors

Wexford, PA, United States of America

Richard A Erth

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 = 14

Richard A Erth ↔ Layton A Wise (1 patent)Richard A ErthRichard A Erth (1 patent)Layton A WiseLayton A Wise (14 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Mine Safety Appliances Company (1 from 242 patents)


1 patent:

1. 6317895 - Safety helmet assembly

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