Growing community of inventors

Charlton, MA, United States of America

Phil Johnson

Average Co-Inventor Count = 2.00

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 = 3

Phil JohnsonXiaorong You (1 patent)Phil JohnsonPhil Johnson (1 patent)Xiaorong YouXiaorong You (13 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Sperian Eye & Face Protection, Inc. (1 from 27 patents)


1 patent:

1. 8441724 - IR filters with high VLT and neutral color

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as of
12/20/2025
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