Growing community of inventors

Woodstock, CT, United States of America

David W Johnsen

Average Co-Inventor Count = 1.00

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 = 422

David W JohnsenDavid W Johnsen (16 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. American Optical Corporation (16 from 409 patents)


16 patents:

1. D263058 - Pair of spectacles

2. D253954 - Pair of spectacles

3. D253480 - Pair of spectacles

4. D253479 - Spectacles frame front

5. D252882 - Spectacles frame front

6. D252813 - Pair of spectacles

7. D248861 - Spectacles frame front

8. D247910 - Pair of spectacles

9. D246656 - Pair of spectacles

10. D244603 - Pair of spectacles

11. D244447 - Pair of spectacles

12. D243762 - Pair of spectacles

13. D243396 - Pair of spectacles

14. D243395 - Pair of spectacles

15. D243397 - Spectacle frame front

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as of
12/31/2025
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