Growing community of inventors

Orlando, FL, United States of America

John C Roberts

Average Co-Inventor Count = 1.57

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 = 92

John C RobertsGilbert F Fisher, Iii (2 patents)John C RobertsWilliam A Elmer (1 patent)John C RobertsJoseph W Roberts, Sr (1 patent)John C RobertsGordon MacLeod (1 patent)John C RobertsJohn C Roberts (6 patents)Gilbert F Fisher, IiiGilbert F Fisher, Iii (2 patents)William A ElmerWilliam A Elmer (21 patents)Joseph W Roberts, SrJoseph W Roberts, Sr (2 patents)Gordon MacLeodGordon MacLeod (1 patent)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Other (3 from 832,680 patents)

2. Tub-master Corporation (1 from 1 patent)


6 patents:

1. D381436 - Base for skylight

2. D377835 - Combined skylight and base

3. 5241703 - Protective shield with a forearm support

4. 4971275 - Lightweight, flexible holder for scuba tanks and the like

5. 4823525 - Skylight structure

6. 4668120 - Solar-powered illuminated reflector

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as of
12/7/2025
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