Growing community of inventors

Grand Forks, ND, United States of America

Lucas R Spray

Average Co-Inventor Count = 1.50

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 = 7

Lucas R SprayWilliam Roy Cohoon (1 patent)Lucas R SprayJoseph J Koengeter (1 patent)Lucas R SprayLucas R Spray (2 patents)William Roy CohoonWilliam Roy Cohoon (9 patents)Joseph J KoengeterJoseph J Koengeter (2 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Retrax Holdings, LLC (2 from 11 patents)


2 patents:

1. 12246779 - Manual disconnect system for powered retractable cover

2. 10112464 - Roll-up tonneau cover system with grooved side rails

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1/5/2026
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