Growing community of inventors

Blooming Prairie, MN, United States of America

Douglas G Johnson

Average Co-Inventor Count = 2.91

ph-index = 6

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 = 121

Douglas G JohnsonTodd A Anderson (5 patents)Douglas G JohnsonJoseph P Landherr (3 patents)Douglas G JohnsonJames Gerard Seaser (3 patents)Douglas G JohnsonTimothy T Frenzen (3 patents)Douglas G JohnsonSabrina Tucker (1 patent)Douglas G JohnsonDaniel G Tucker (1 patent)Douglas G JohnsonDaniel G Tucker, Deceased (1 patent)Douglas G JohnsonDouglas G Johnson (8 patents)Todd A AndersonTodd A Anderson (6 patents)Joseph P LandherrJoseph P Landherr (8 patents)James Gerard SeaserJames Gerard Seaser (6 patents)Timothy T FrenzenTimothy T Frenzen (5 patents)Sabrina TuckerSabrina Tucker (1 patent)Daniel G TuckerDaniel G Tucker (1 patent)Daniel G Tucker, DeceasedDaniel G Tucker, Deceased (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Truth Hardware Corporation (8 from 146 patents)


8 patents:

1. 6634141 - Window operator

2. 6385911 - Window operator

3. 5778602 - Pick resistant window lock manual control

4. 5765308 - Window operator

5. D390445 - Window lock handle and escutcheon

6. D389396 - Window lock handle and escutcheon

7. D375674 - Outer surface of an operator housing

8. D375254 - Outer surface of an operator housing

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as of
12/11/2025
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