Growing community of inventors

National City, CA, United States of America

John R Gregory

Average Co-Inventor Count = 2.00

ph-index = 5

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 = 184

John R GregoryJohn D Dondero (4 patents)John R GregoryGerald R Parks (3 patents)John R GregoryJohn R Gregory (5 patents)John D DonderoJohn D Dondero (19 patents)Gerald R ParksGerald R Parks (22 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,812 patents)

2. Gregory; John R. (2 from 3 patents)


5 patents:

1. D284327 - Face guard for a motorcycle helmet

2. 4516273 - Upper body protector apparatus and method

3. D278280 - Chest and shoulder protector

4. D277520 - Face guard

5. 4467475 - Upper body protector apparatus

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as of
12/19/2025
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