Growing community of inventors

Grand Rapids, MI, United States of America

Gordon E Kamstra

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 = 10

Gordon E KamstraRobert James Powers (1 patent)Gordon E KamstraGordon E Kamstra (1 patent)Robert James PowersRobert James Powers (6 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (1 from 832,812 patents)


1 patent:

1. 4143638 - Fireplace heat exchange system

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as of
12/19/2025
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