For the Inventor, By the Inventor

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Morton Grove, IL, United States of America

John Crane Inc.

USPTO Granted Patents = 64

% Expired Patents = 6.3

CIPO Patents = 2

EPO Patents = 16

Trademarks = 26

Forward Citations = 1,188

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84 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:

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: Sort by Forward Citations

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),

Company Overview

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 synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

64 Patents

#1 in Morton Grove, IL

#318 in Illinois

#5,686 in US

#11,484 in the World

Morton Grove, IL, United States of America

John Crane Inc.

Forward Citations = 1,188

84 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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: John Crane Inc.. Retrieved from https://idiyas.com/company/john-crane

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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