Growing community of inventors

Ft. Lauderdale, FL, United States of America

Robert C Durham, Jr

Average Co-Inventor Count = 1.14

ph-index = 4

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 = 251

Robert C Durham, JrRuth Ann Durham (1 patent)Robert C Durham, JrRobert C Durham, Jr (4 patents)Ruth Ann DurhamRuth Ann Durham (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (2 from 832,812 patents)

2. Chelsea Industries, Inc. (2 from 7 patents)


4 patents:

1. 5713167 - Glazing system

2. 4974364 - Window construction

3. 4949506 - Window construction

4. 4227345 - Tilt-lock slide for window sash

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as of
12/20/2025
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