Growing community of inventors

Hendersonville, TN, United States of America

Robert W Quarles

Average Co-Inventor Count = 2.00

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 = 26

Robert W QuarlesLarry W Flatt (2 patents)Robert W QuarlesRobert W Quarles (2 patents)Larry W FlattLarry W Flatt (4 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Illinois Tool Works Inc. (2 from 7,620 patents)


2 patents:

1. 6286551 - Segmented stackable head design

2. 6260583 - Segmented stackable head design

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1/23/2026
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