Growing community of inventors

Mason, OH, United States of America

Donald M Johnson

Average Co-Inventor Count = 3.00

ph-index = 1

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 = 1

Donald M JohnsonDavid D Morrow (1 patent)Donald M JohnsonJoseph P Roth (1 patent)Donald M JohnsonDonald M Johnson (1 patent)David D MorrowDavid D Morrow (18 patents)Joseph P RothJoseph P Roth (8 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Opw-engineered Systems, Inc. (1 from 14 patents)


1 patent:

1. 10563773 - Fluid system coupling with internal valves

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as of
12/12/2025
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