Growing community of inventors

Carbondale, IL, United States of America

John H Yopp

Average Co-Inventor Count = 4.00

ph-index = 2

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 = 34

John H Yopp ↔ Alan M Kinnersley (2 patents)John H Yopp ↔ George H Whitten (2 patents)John H Yopp ↔ Taylor C Scott, Iii (2 patents)John H YoppJohn H Yopp (2 patents)Alan M KinnersleyAlan M Kinnersley (6 patents)George H WhittenGeorge H Whitten (3 patents)Taylor C Scott, IiiTaylor C Scott, Iii (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Cpc International, Inc. (2 from 273 patents)


2 patents:

1. 5238841 - Method for regulating plant growth

2. 4813997 - Method for regulating plant growth

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as of
12/20/2025
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