Growing community of inventors

Port Charlotte, FL, United States of America

Robert F Humberstone

Average Co-Inventor Count = 2.00

ph-index = 5

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 = 75

Robert F HumberstoneKendrick Michael Borst, Sr (5 patents)Robert F HumberstoneHector Nava (5 patents)Robert F HumberstoneRobert F Humberstone (10 patents)Kendrick Michael Borst, SrKendrick Michael Borst, Sr (5 patents)Hector NavaHector Nava (5 patents)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Pratt Corrugated Holdings, Inc. (10 from 208 patents)


10 patents:

1. D1085872 - Box with locking tab

2. 12365509 - Tamper-evident box

3. D1057557 - Locking tab for tamper-evident box

4. 12172806 - Tamper-evident box

5. 12162657 - Method of using a tamper-evident box

6. D1037847 - Locking tab for a box

7. 11945627 - Locking box

8. 11840379 - Tamper-evident box

9. 11731800 - Method of using a locking box

10. 11377252 - Locking box

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as of
12/16/2025
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