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For the Inventor, By the Inventor

Morton Grove, IL, United States of America

John Crane Inc.


USPTO Granted Patents = 64

% Expired Patents = 6.3



Trademarks = 26

Forward Citations = 1,188

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84 inventors (with patents filed for the assignee):

goldMedal James R Wasser (11 out of 11 patents)

silverMedal Glenn G Pecht (9 out of 10 patents)

bronzeMedal 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:
Mechanical Seals
Dry Gas Seal
Flexible Membrane
Seal Assembly
Rotary Shaft
Composite Materials
Seal Monitoring
High Pressure
Tandem Seal
Gas Lubrication
Tribological Applications
Split Seal

64 patents:

1. 12680046 - Low friction coatings (2026-07-14),
2. 12181050 - Ring with recirculating grooves for dry gas seal (2024-12-31),
3. 12055222 - Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipment (2024-08-06),
4. 11821523 - Non-pusher dry gas seal with sealing elastomer and systems utilizing same (2023-11-21),
5. 11815185 - Non-pusher dry running seal with sealing elastomer as a backup in sliding seal system (2023-11-14),
6. 11808359 - Flexible sealing membrane and seal assembly for rotary shaft equipment (2023-11-07),
7. 11761542 - Non-pusher seal with sealing elastomer and systems utilizing same (2023-09-19),
8. 11473680 - Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipment (2022-10-18),
9. 10662550 - Diamond nanostructures with large surface area and method of producing the same (2020-05-26),
10. 10662523 - Extreme durability composite diamond film (2020-05-26),
11. 10634250 - Non-collapsible flexible sealing membrane and seal assembly for rotary shaft equipment (2020-04-28),
12. 10184565 - Mechanical end face seal having an induction heated seal face (2019-01-22),
13. 9790952 - Seal monitoring and control system (2017-10-17),
14. 9651157 - Split seal assembly and method (2017-05-16),
15. 8651801 - Seal monitoring and control system (2014-02-18),
John Crane Inc., headquartered in Morton Grove, Illinois, specializes in the development and manufacturing of mechanical seals and associated technologies. The company is recognized for its expertise in dry gas seals, flexible membranes, and seal assemblies, catering to various industries that require reliable sealing solutions. With a focus on high-pressure applications and advanced composite materials, John Crane also emphasizes seal monitoring technologies to enhance operational efficiency and reliability in critical systems.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

John Crane Inc.
64 Patents

#1 in Morton Grove, IL

#317 in Illinois

#5,677 in US

#11,463 in the World

Morton Grove, IL (US)
Morton Grove, IL, United States of America

John Crane Inc.

Forward Citations = 1,188

84 inventors:

goldMedal James R Wasser (11 out of 11 patents)

silverMedal Glenn G Pecht (9 out of 10 patents)

bronzeMedal 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)

Please report any incorrect information to [email protected]
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