Growing community of inventors

Dubuque, IA, United States of America

Darrell Jeffrey Rowan

Average Co-Inventor Count = 5.70

ph-index = 3

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

Darrell Jeffrey RowanNeil Vincent Harber (4 patents)Darrell Jeffrey RowanMartin Lavern Ruhter (3 patents)Darrell Jeffrey RowanMichael Eugene Kennedy (3 patents)Darrell Jeffrey RowanJosh Dean Graeve (3 patents)Darrell Jeffrey RowanRichard Arnold Valenzuela (2 patents)Darrell Jeffrey RowanRichard John Gotto (2 patents)Darrell Jeffrey RowanJames Michael Frett (2 patents)Darrell Jeffrey RowanCharles Jon Paul Asp (2 patents)Darrell Jeffrey RowanNathan Joseph Horstman (1 patent)Darrell Jeffrey RowanJed Douglas Polzin (1 patent)Darrell Jeffrey RowanRyan Matthew Lutze (1 patent)Darrell Jeffrey RowanMaurice Thomas Nesbitt (1 patent)Darrell Jeffrey RowanDarrell Jeffrey Rowan (4 patents)Neil Vincent HarberNeil Vincent Harber (18 patents)Martin Lavern RuhterMartin Lavern Ruhter (19 patents)Michael Eugene KennedyMichael Eugene Kennedy (12 patents)Josh Dean GraeveJosh Dean Graeve (7 patents)Richard Arnold ValenzuelaRichard Arnold Valenzuela (6 patents)Richard John GottoRichard John Gotto (5 patents)James Michael FrettJames Michael Frett (4 patents)Charles Jon Paul AspCharles Jon Paul Asp (4 patents)Nathan Joseph HorstmanNathan Joseph Horstman (36 patents)Jed Douglas PolzinJed Douglas Polzin (10 patents)Ryan Matthew LutzeRyan Matthew Lutze (3 patents)Maurice Thomas NesbittMaurice Thomas Nesbitt (2 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Deere + Company (4 from 8,451 patents)


4 patents:

1. 8360193 - Arrangement of steering wheel and operator seat assembly

2. 8091678 - Input control pattern

3. 7913798 - Armrest mounted grader control

4. 7415822 - Load sense boost device

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as of
12/6/2025
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