Growing community of inventors

Norwell, MA, United States of America

Erik W 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 = 18

Erik W JohnsonRichard L McCulley, Jr (1 patent)Erik W JohnsonDavid A Vogel (1 patent)Erik W JohnsonErik W Johnson (1 patent)Richard L McCulley, JrRichard L McCulley, Jr (7 patents)David A VogelDavid A Vogel (6 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Tsx Products Corporation (1 from 2 patents)


1 patent:

1. 7245251 - Apparatus for automatically pointing a device at a target

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1/9/2026
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