Growing community of inventors

Tampa, FL, United States of America

David H Freeman

Average Co-Inventor Count = 2.00

ph-index = 7

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 = 1,939

David H FreemanGary A Freeman (7 patents)David H FreemanDavid H Freeman (7 patents)Gary A FreemanGary A Freeman (447 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Viztec, Inc. (5 from 10 patents)

2. Samsung Electronics Co., Ltd. (2 from 131,766 patents)


7 patents:

1. 7854684 - Wearable device

2. 7229385 - Wearable device

3. 6450407 - Chip card rebate system

4. 6402039 - Flexible chip card with display

5. 6068183 - Chip card system

6. 6019284 - Flexible chip card with display

7. 5931764 - Wearable device with flexible display

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as of
1/1/2026
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