For the Inventor, By the Inventor

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Chicago, IL, United States of America

John Crane-houdaille, Inc.

USPTO Granted Patents = 9

Trademarks = 3

Forward Citations = 197

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13 inventors (with patents filed for the assignee):

James P Netzel (3 out of 8 patents)

Mark Gerard Pospisil (1 out of 4 patents)

Glenn G Pecht (1 out of 10 patents)

4. Josef Sedy (1 out of 10 patents)

5. Jon B Hamaker (1 out of 5 patents)

6. Joseph J Trytek (1 out of 2 patents)

7. John R Wilson (1 out of 1 patent)

8. Jon J Radosay (1 out of 1 patent)

9. Horst Bruck (1 out of 1 patent)

10. Eugene Novosad (1 out of 1 patent)

11. Leonard B Mednick (1 out of 1 patent)

12. Joseph Sehnal (1 out of 1 patent)

13. Donald E Amundson (1 out of 1 patent)

9 patents: Sort by Forward Citations

1. 4889348 - Spiral groove seal system for high vapor-pressure liquids (1989-12-26),

2. 4779876 - Drive for banded washer type seal (1988-10-25),

3. 4768790 - Mechanical face seal having centering means (1988-09-06),

4. 4749200 - Mechanical seal with welded bellows (1988-06-07),

5. 4669738 - Internally installable package seal (1987-06-02),

6. 4635798 - Flash sorting apparatus (1987-01-13),

7. 4449719 - Emergency seal (1984-05-22),

8. 4407512 - High pressure rotary mechanical seal (1983-10-04),

9. 4377290 - Symmetrical seal package for multiple face seals (1983-03-22),

John Crane is a global leader in rotating equipment solutions, supplying engineered technologies and services to process industries worldwide. With a history dating back to 1917, John Crane has built an unparalleled reputation for innovation, quality, and reliability. The company offers a comprehensive range of seals, bearings, and other components for pumps, compressors, and other critical machinery. John Crane-Houdaille, Inc. is a division of John Crane dedicated to providing high-quality aftermarket services and support for a wide range of industries.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

9 Patents

#361 in Chicago, IL

#1,501 in Illinois

#31,665 in US

Chicago, IL, United States of America

John Crane-houdaille, Inc.

Forward Citations = 197

13 inventors:

James P Netzel (3 out of 8 patents)

Mark Gerard Pospisil (1 out of 4 patents)

Glenn G Pecht (1 out of 10 patents)

4. Josef Sedy (1 out of 10 patents)

5. Jon B Hamaker (1 out of 5 patents)

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