Growing community of inventors

Bloomfield, IA, United States of America

Robert J Heerdink

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 = 0

Robert J HeerdinkJames L Vogt (1 patent)Robert J HeerdinkRobert J Heerdink (1 patent)James L VogtJames L Vogt (7 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

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


1 patent:

1. 4609063 - Vehicle hood mounting

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as of
12/20/2025
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