Growing community of inventors

Lewis Center, OH, United States of America

Douglas D Hansel

Average Co-Inventor Count = 1.50

ph-index = 3

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 = 95

Douglas D HanselThomas R Christianson (2 patents)Douglas D HanselDouglas D Hansel (3 patents)Thomas R ChristiansonThomas R Christianson (18 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Showertek, Inc. (2 from 18 patents)

2. Trident Design, LLC (1 from 6 patents)


3 patents:

1. D699875 - Wearable and positionable lamp with dual light sources

2. D623783 - Wearable and positionable dual lamp assembly

3. 7518956 - Planisphere clock

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as of
12/12/2025
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