Growing community of inventors

Naperville, IL, United States of America

Ellen L 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 = 20

Ellen L Johnson ↔ John E Hoots (1 patent)Ellen L Johnson ↔ Guy A Crucil (1 patent)Ellen L JohnsonEllen L Johnson (1 patent)John E HootsJohn E Hoots (66 patents)Guy A CrucilGuy A Crucil (7 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Nalco Chemical Company (1 from 1,167 patents)


1 patent:

1. 4744949 - Method for preventing corrosion in aqueous systems

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1/15/2026
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