Growing community of inventors

Saint Paul, MN, United States of America

David Hallock Johnson, Jr

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 = 1

David Hallock Johnson, Jr ↔ Laura Sue Quakenbush (1 patent)David Hallock Johnson, Jr ↔ Joseph Guerino, Jr (1 patent)David Hallock Johnson, Jr ↔ Charles Ortlip, Jr (1 patent)David Hallock Johnson, JrDavid Hallock Johnson, Jr (1 patent)Laura Sue QuakenbushLaura Sue Quakenbush (2 patents)Joseph Guerino, JrJoseph Guerino, Jr (1 patent)Charles Ortlip, JrCharles Ortlip, Jr (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. American Cyanamid Company (1 from 3,580 patents)


1 patent:

1. 6060430 - Methods and compositions for enhancing herbicidal activity

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as of
12/17/2025
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