Growing community of inventors

Crystal, MN, United States of America

Douglas D Castle

Average Co-Inventor Count = 3.00

ph-index = 2

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 = 13

Douglas D Castle ↔ Glenn M Fishbine (2 patents)Douglas D Castle ↔ Bruce N Stanger (2 patents)Douglas D CastleDouglas D Castle (2 patents)Glenn M FishbineGlenn M Fishbine (13 patents)Bruce N StangerBruce N Stanger (3 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Digital Biometrics, Inc. (2 from 11 patents)


2 patents:

1. D346158 - Cabinet housing for optical imaging of fingerprints

2. D325196 - Cabinet for optical imaging of fingerprints

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as of
12/31/2025
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