Growing community of inventors

Kingwood, TX, United States of America

Stephen P Simmons

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 = 15

Stephen P Simmons ↔ Douglas W Carlson (1 patent)Stephen P SimmonsStephen P Simmons (1 patent)Douglas W CarlsonDouglas W Carlson (9 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Hydril Company (1 from 277 patents)


1 patent:

1. 5465759 - Variable diameter pipe protector

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as of
12/15/2025
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