Growing community of inventors

Vancouver, WA, United States of America

Darrin McDonald

Average Co-Inventor Count = 2.00

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 = 264

Darrin McDonaldCraig Hargreaves (4 patents)Darrin McDonaldDarrin McDonald (4 patents)Craig HargreavesCraig Hargreaves (45 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. IP Holdings, Inc. (4 from 266 patents)


4 patents:

1. 8209912 - Horticulture light fixture with glass retention rails

2. D613900 - Horticulture light socket assembly

3. 7641367 - Horticulture light fixture

4. D583092 - Light diffuser

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as of
12/28/2025
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