Growing community of inventors

Naperville, IL, United States of America

John A Navis

Average Co-Inventor Count = 1.05

ph-index = 8

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 = 381

John A NavisStephen Richard Ash (1 patent)John A NavisJohn A Navis (10 patents)Stephen Richard AshStephen Richard Ash (62 patents)
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Inventor’s number of patents
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Strength of working relationships

Company Filing History:

1. Janin Group, Inc. (5 from 5 patents)

2. Other (3 from 832,891 patents)

3. Merit Medical Systems, Inc. (2 from 430 patents)


10 patents:

1. 9474887 - Surgical implement guide assembly and methods

2. 8435226 - Catheter

3. 7013928 - Peritoneal dialysis catheter

4. 6889713 - Peritoneal dialysis catheter

5. 6659134 - Peritoneal dialysis catheter

6. 6589212 - Guide for surgical device

7. 6167884 - Optically transparent medical instrument cover

8. 6000400 - Optically transparent medical instrument cover

9. 5676159 - Ultrasound cover

10. D370531 - Peritoneal dialysis catheter implanter

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as of
1/1/2026
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