For the Inventor, By the Inventor

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Chicago, IL, United States of America

John Crane Inc.

USPTO Granted Patents = 63

CIPO Patents = 2

EPO Patents = 14

Trademarks = 30

Forward Citations = 1,154

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79 inventors (with patents filed for the assignee):

James R Wasser (11 out of 11 patents)

Glenn G Pecht (9 out of 10 patents)

Jon J Radosav (6 out of 6 patents)

4. Douglas J Volden (6 out of 6 patents)

5. David M Dudek (5 out of 5 patents)

6. Wei-Tang Lai (5 out of 5 patents)

7. Darin Merrill Rasmussen (5 out of 5 patents)

8. Syed Niamathullah (4 out of 4 patents)

9. Michael G Kalodimos (4 out of 4 patents)

10. James P Netzel (4 out of 8 patents)

11. Jon B Hamaker (4 out of 5 patents)

12. Joseph L Savio (3 out of 6 patents)

13. Tom Steigerwald (3 out of 3 patents)

14. Dan Kozlowski (3 out of 3 patents)

15. Joe Delrahim (3 out of 4 patents)

Core Competencies:

Dry Gas Seal

Flexible Sealing Membrane

Mechanical Face Seal

Seal Monitoring System

Composite Diamond Film

Non-Contacting Seal

Rotary Shaft Equipment

Tribological Applications

Gas Lubricated Seal

Mechanical Seal Assembly

Radial Lip Shaft Seal

Tandem Seal Arrangement

63 patents: Sort by Forward Citations

1. 12181050 - Ring with recirculating grooves for dry gas seal (2024-12-31),

2. 12055222 - Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipment (2024-08-06),

3. 11821523 - Non-pusher dry gas seal with sealing elastomer and systems utilizing same (2023-11-21),

4. 11815185 - Non-pusher dry running seal with sealing elastomer as a backup in sliding seal system (2023-11-14),

5. 11808359 - Flexible sealing membrane and seal assembly for rotary shaft equipment (2023-11-07),

6. 11761542 - Non-pusher seal with sealing elastomer and systems utilizing same (2023-09-19),

7. 11473680 - Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipment (2022-10-18),

8. 10662550 - Diamond nanostructures with large surface area and method of producing the same (2020-05-26),

9. 10662523 - Extreme durability composite diamond film (2020-05-26),

10. 10634250 - Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipment (2020-04-28),

11. 10184565 - Mechanical end face seal having an induction heated seal face (2019-01-22),

12. 9790952 - Seal monitoring and control system (2017-10-17),

13. 9651157 - Split seal assembly and method (2017-05-16),

14. 8651801 - Seal monitoring and control system (2014-02-18),

15. 8651494 - Split seal assembly and method (2014-02-18),

John Crane is a global leader in rotating equipment solutions, supplying engineered technologies and services to process industries. With a century of experience, the company offers an extensive portfolio of mechanical seals, seal support systems, filtration systems, and other products for various applications. John Crane's dedication to innovation, reliability, and customer satisfaction has made it a trusted partner in optimizing performance and reducing total cost of ownership for its customers worldwide.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Jan 20 2026

63 Patents

#85 in Chicago, IL

#318 in Illinois

#5,579 in US

#11,347 in the World

Chicago, IL, United States of America

John Crane Inc.

Forward Citations = 1,154

79 inventors:

James R Wasser (11 out of 11 patents)

Glenn G Pecht (9 out of 10 patents)

Jon J Radosav (6 out of 6 patents)

4. Douglas J Volden (6 out of 6 patents)

5. David M Dudek (5 out of 5 patents)

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