Growing community of inventors

Denver, CO, United States of America

Charles H Frankel

Average Co-Inventor Count = 2.00

ph-index = 1

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 = 19

Charles H Frankel ↔ John N Roberts (1 patent)Charles H FrankelCharles H Frankel (1 patent)John N RobertsJohn N Roberts (1 patent)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Smart Parts, Inc. (1 from 48 patents)


1 patent:

1. D597321 - Digital picture frame

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as of
12/17/2025
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