Growing community of inventors

Columbus, IN, United States of America

Ralph Gutman

Average Co-Inventor Count = 3.00

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 = 6

Ralph GutmanZachary Schwab (2 patents)Ralph GutmanDavid Joseph Reynolds (2 patents)Ralph GutmanRalph Gutman (2 patents)Zachary SchwabZachary Schwab (7 patents)David Joseph ReynoldsDavid Joseph Reynolds (5 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Cummins Inc. (2 from 1,599 patents)


2 patents:

1. 8266905 - System for limiting engine output power by controlling fueling

2. 7721539 - System for controlling engine fueling to limit engine output power

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as of
1/9/2026
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