Growing community of inventors

Hudson, WI, United States of America

Robert J Johnson

Average Co-Inventor Count = 4.00

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 = 39

Robert J Johnson ↔ Roger H Appeldorn (1 patent)Robert J Johnson ↔ Forrest J Rouser (1 patent)Robert J Johnson ↔ Robert L Erwin (1 patent)Robert J JohnsonRobert J Johnson (1 patent)Roger H AppeldornRoger H Appeldorn (17 patents)Forrest J RouserForrest J Rouser (13 patents)Robert L ErwinRobert L Erwin (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Minnesota Mining and Manufacturing Company (1 from 7,865 patents)


1 patent:

1. 5360270 - Reusable security enclosure

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as of
12/5/2025
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