Growing community of inventors

Johnston, RI, United States of America

Charles Sipes

Average Co-Inventor Count = 4.00

ph-index = 2

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 = 8

Charles SipesAlbert C Chiang (2 patents)Charles SipesJohn A Roderick (2 patents)Charles SipesDavid R Willis (2 patents)Charles SipesCharles Sipes (2 patents)Albert C ChiangAlbert C Chiang (21 patents)John A RoderickJohn A Roderick (16 patents)David R WillisDavid R Willis (4 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Mearthane Products Corporation (2 from 17 patents)


2 patents:

1. 6260861 - Variable traction wheel for in-line roller skate

2. 5829757 - Variable traction wheel for in-line roller skate

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as of
12/31/2025
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