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Perrysburg, OH, United States of America

Robert Douglas Spaans

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 = 3

Robert Douglas SpaansJohn L Sigmund (2 patents)Robert Douglas SpaansJacob J Huskins (2 patents)Robert Douglas SpaansJeffery V Miller (1 patent)Robert Douglas SpaansRobert W Jennings (1 patent)Robert Douglas SpaansRobert Douglas Spaans (2 patents)John L SigmundJohn L Sigmund (10 patents)Jacob J HuskinsJacob J Huskins (2 patents)Jeffery V MillerJeffery V Miller (1 patent)Robert W JenningsRobert W Jennings (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Comfort Line Ltd. (2 from 2 patents)


2 patents:

1. 7597771 - Pultrusion method and related article

2. 7518060 - Prefabricated structural member having a wire routing system

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as of
12/21/2025
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