Growing community of inventors

Slater, IA, United States of America

Richard G Stelpflug

Average Co-Inventor Count = 2.00

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 = 7

Richard G StelpflugMark J Messmer (3 patents)Richard G StelpflugRichard G Stelpflug (3 patents)Mark J MessmerMark J Messmer (5 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Zenco (No. 4) Limited (2 from 11 patents)

2. Zeneca Limited (1 from 854 patents)


3 patents:

1. 5602315 - Inbred corn line ZS1202

2. 5602316 - Inbred corn line ZS1783

3. 5569820 - Inbred corn line ZS1284

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as of
1/7/2026
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