Growing community of inventors

Wakefield, RI, United States of America

David R Willis

Average Co-Inventor Count = 2.67

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 = 53

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

Company Filing History:

1. Mearthane Products Corporation (4 from 17 patents)


4 patents:

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

2. 5967552 - In-line wheeled skate

3. 5836591 - In-line wheeled skate for extreme skating

4. 5829757 - Variable traction wheel for in-line roller skate

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as of
12/31/2025
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