Growing community of inventors

Pawtucket, RI, United States of America

Charles H Keegan

Average Co-Inventor Count = 2.57

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 = 43

Charles H Keegan ↔ Brian C Sundberg (3 patents)Charles H Keegan ↔ Michael S Bernstein (1 patent)Charles H Keegan ↔ Michael I Lerner (1 patent)Charles H KeeganCharles H Keegan (3 patents)Brian C SundbergBrian C Sundberg (42 patents)Michael S BernsteinMichael S Bernstein (36 patents)Michael I LernerMichael I Lerner (24 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Safety 1st, Inc. (3 from 65 patents)


3 patents:

1. D427116 - Stationary baby walker

2. D417417 - Baby walker

3. D403715 - Child's riding toy

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as of
12/15/2025
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