Growing community of inventors

Indianola, IA, United States of America

Richard J Erwin

Average Co-Inventor Count = 7.00

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

Richard J Erwin ↔ Nathan Joseph Horstman (1 patent)Richard J Erwin ↔ Robert J Meegan (1 patent)Richard J Erwin ↔ Michael Eugene Kennedy (1 patent)Richard J Erwin ↔ Brian Christopher Proeber (1 patent)Richard J Erwin ↔ Barry W Schaffter (1 patent)Richard J Erwin ↔ Timoth A Wilcox (1 patent)Richard J ErwinRichard J Erwin (1 patent)Nathan Joseph HorstmanNathan Joseph Horstman (36 patents)Robert J MeeganRobert J Meegan (19 patents)Michael Eugene KennedyMichael Eugene Kennedy (12 patents)Brian Christopher ProeberBrian Christopher Proeber (2 patents)Barry W SchaffterBarry W Schaffter (2 patents)Timoth A WilcoxTimoth A Wilcox (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Deere + Company (1 from 8,451 patents)


1 patent:

1. 8887412 - Road position indication for motor grader snow plow

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idiyas.com
as of
12/8/2025
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