Growing community of inventors

Iowa City, IA, United States of America

John Kollman

Average Co-Inventor Count = 7.00

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 = 51

John KollmanRhett Schildroth (3 patents)John KollmanMerlan J Rolffs (3 patents)John KollmanCourtney N Achen (3 patents)John KollmanMarvin Bachman (3 patents)John KollmanMichael J Myers (3 patents)John KollmanJohn P Mulherin (3 patents)John KollmanJohn Kollman (3 patents)Rhett SchildrothRhett Schildroth (27 patents)Merlan J RolffsMerlan J Rolffs (24 patents)Courtney N AchenCourtney N Achen (23 patents)Marvin BachmanMarvin Bachman (18 patents)Michael J MyersMichael J Myers (17 patents)John P MulherinJohn P Mulherin (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Kinze Manufacturing, Inc. (3 from 156 patents)


3 patents:

1. 11558991 - Apparatuses, methods, and systems for providing down force for an agricultural implement

2. 10477753 - Apparatuses, methods, and systems for providing down force for an agricultural implement

3. 9814172 - Apparatuses, methods, and systems for providing down force for an agricultural implement

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idiyas.com
as of
12/30/2025
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