Growing community of inventors

Danvers, MA, United States of America

Andrew O 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 = 7

Andrew O Johnson ↔ John P Sanroma (1 patent)Andrew O Johnson ↔ Guy P Bouchard (1 patent)Andrew O Johnson ↔ Russell R Holden (1 patent)Andrew O JohnsonAndrew O Johnson (1 patent)John P SanromaJohn P Sanroma (17 patents)Guy P BouchardGuy P Bouchard (8 patents)Russell R HoldenRussell R Holden (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Osram Sylvania Inc. (1 from 1,452 patents)


1 patent:

1. 8139376 - Housing for electronic ballast

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as of
12/6/2025
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