Stephan A DeFonzo

This inventor holds 51 USPTO granted patents and 4 published patent applications and 4 EPO patents, primarily in Vascular Closure Devices (CPC class A61B). Top assignees: Rex Medical, L.p., United States Surgical Corporation, Argon Medical Devices Inc.. Active years: 1994-2025.

USPTO Granted Patents = 51 (Patent Applications = 4)

% Patents Active = 72.5

EPO Patents = 4 (Patent Applications = 2)

Average Co-Inventor Count = 3.2

ph-index = 26

Forward Citations = 19,396(Granted Patents)

Forward Citations (Not Self Cited) = 19,213(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Bridgeport, CT (US) (1994 - 2006)
Wayne, PA (US) (2003 - 2022)

Company Filing History:

United States Surgical Corporation

patents

4 out of 20

Argon Medical Devices Inc.

patents

4. 2 out of 1,159

Tyco Healthcare Group LP

patents

5. 2 out of 834,350

Other

patents

Years Active: 1994-2025

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Areas of Expertise:

Vascular Hole Closure

Vein Filter

Dialysis Catheter

Surgical Fasteners

Ablation Fluid Delivery

Surgical Biopsy

Tissue Biopsy

Surgical Retractor

Valve Assembly

Seal Assembly

51 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12349883 - Vascular hole closure device (2025-07-08),

2. 11369354 - Vascular hole closure delivery device (2022-06-28),

3. 11064986 - Vascular hole closure device (2021-07-20),

4. 10639139 - Vein filter (2020-05-05),

5. 10390808 - Vascular hole closure device (2019-08-27),

6. 10342524 - Vascular hole closure device (2019-07-09),

7. 10098621 - Vascular hole closure delivery device (2018-10-16),

8. 9968345 - Vascular hole closure device (2018-05-15),

9. 9867926 - Dialysis catheter (2018-01-16),

10. 9763766 - Vein filter (2017-09-19),

11. 9526604 - Vessel filter (2016-12-27),

12. 9463005 - Vascular hole closure device (2016-10-11),

13. 9226738 - Vascular hole closure delivery device (2016-01-05),

14. 9168121 - Vein filter (2015-10-27),

15. 8597324 - Vascular hole closure device (2013-12-03),

Title: Stephan A DeFonzo - Inventor from Wayne, PA (US)

Introduction: Stephan A DeFonzo is a renowned inventor based in Wayne, PA, known for his innovative contributions to various industries.

Latest Patents: Stephan A DeFonzo holds several patents in the fields of technology, healthcare, and consumer products, showcasing his diverse range of expertise.

Career Highlights: With a career spanning over two decades, Stephan A DeFonzo has been instrumental in developing cutting-edge solutions that have significantly impacted the market.

Collaborations: Throughout his career, Stephan A DeFonzo has collaborated with leading companies, research institutions, and universities to bring his inventions to life and make a lasting impact on society.

Conclusion: Stephan A DeFonzo's passion for innovation and his dedication to pushing the boundaries of what is possible make him a standout figure in the world of inventors.