Growing community of inventors

Leamington Spa, United Kingdom

Dennis Sydney 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 = 19

Dennis Sydney JohnsonDavid A Davies (1 patent)Dennis Sydney JohnsonDennis Sydney Johnson (1 patent)David A DaviesDavid A Davies (3 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Automotive Products Company (1 from 7 patents)


1 patent:

1. 3938635 - Driven plates for friction clutches

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as of
12/20/2025
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