Growing community of inventors

Story City, IA, United States of America

Robert L Sills

Average Co-Inventor Count = 1.33

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 = 54

Robert L SillsDennis L Elwell (2 patents)Robert L SillsRobert L Sills (4 patents)Dennis L ElwellDennis L Elwell (4 patents)
..
Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Putco, Inc. (4 from 108 patents)


4 patents:

1. 5704678 - Cap protector for pickup truck sidewalls

2. D388043 - Decorative top edge cover for pickup truck side walls

3. 5598961 - Vehicle tool box

4. D369140 - Vehicle tool box

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as of
1/3/2026
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