Dean R Duffy

This inventor holds 44 USPTO granted patents and 12 published patent applications and 8 EPO patents, primarily in Respiratory Protection. Top assignee: 3M Innovative Properties Company. Active years: 1996-2025.

USPTO Granted Patents = 44 (Patent Applications = 12)

% Patents Active = 68.2

EPO Patents = 8 (Patent Applications = 20)

Average Co-Inventor Count = 1.3

ph-index = 17

Forward Citations = 748(Granted Patents)

Company Filing History:

44 out of 22,366

3M Innovative Properties Company

patents

Years Active: 1996-2025

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Areas of Expertise:

Filtering Face-Piece Respirator

Flat-Fold Respirator

Nose Cushioning Member

Darted Mask Body

Exhalation Valve

Pleated Filter Media

Personal Respiratory Protection

Expandable Face Mask

Filter Cartridge

Seal Assembly

Bond Pattern

44 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12434080 - Foldable face-piece respirator with exhalation valve (2025-10-07),

2. 12370386 - Flat-fold respirator having flanges disposed on the mask body (2025-07-29),

3. 12150502 - Respirator including transversely-extending pleat and method of forming same (2024-11-26),

4. 11116998 - Filtering face-piece respirator having folded flange (2021-09-14),

5. 11083916 - Flat fold respirator having flanges disposed on the mask body (2021-08-10),

6. 10602785 - Filtering face-piece respirator having nose cushioning member (2020-03-31),

7. 10576314 - Respirator including contrast layer (2020-03-03),

8. 10238158 - Filtering face-piece respirator having darted mask body (2019-03-26),

9. 10182603 - Filtering face-piece respirator having strap-activated folded flange (2019-01-22),

10. 10136687 - Filtering face-piece respirator having nose notch (2018-11-27),

11. 10040621 - Filtering face-piece respirator dispenser (2018-08-07),

12. 9868002 - Respirator including contrast layer (2018-01-16),

13. 9826786 - Horizontal flat-fold filtering face-piece respirator having indicia of symmetry (2017-11-28),

14. 9770057 - Filtering face-piece respirator having nose cushioning member (2017-09-26),

15. 9615612 - Filtering face-piece respirator with stiffening member integral with filtering structure (2017-04-11),

Title: Dean R Duffy - Pioneering Inventor from Woodbury, MN

Introduction: Dean R Duffy is a renowned inventor hailing from Woodbury, Minnesota, known for his groundbreaking contributions to various industries.

Latest Patents: Dean R Duffy's latest patents include innovative solutions in the fields of renewable energy, sustainable agriculture, and advanced manufacturing processes.

Career Highlights: With a career spanning over two decades, Dean R Duffy has established himself as a visionary inventor with a keen eye for identifying and solving complex challenges through inventive solutions. His work has significantly impacted the way industries operate and has paved the way for a more sustainable future.

Collaborations: Throughout his career, Dean R Duffy has collaborated with leading research institutions, universities, and companies to bring his inventions to life. His ability to work across disciplines and industries has led to the development of cutting-edge technologies that have revolutionized the status quo.

Conclusion: Dean R Duffy's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazing inventor in the world of technology and beyond. His contributions continue to inspire future generations of inventors to push the boundaries of what is possible.