Growing community of inventors

Kansas City, MO, United States of America

John W Lewman

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 = 56

John W LewmanGary D Asbury (2 patents)John W LewmanHerbert H Broeker (1 patent)John W LewmanJohn W Lewman (3 patents)Gary D AsburyGary D Asbury (2 patents)Herbert H BroekerHerbert H Broeker (2 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Parmelee Industries (2 from 10 patents)

2. Hallmark Cards, Inc. (1 from 233 patents)


3 patents:

1. D320869 - Headgear for faceshield

2. D320870 - Headgear for faceshield

3. 4905845 - Display unit

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as of
12/17/2025
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