For the Inventor, By the Inventor

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Granite City, IL, United States of America

Asf-Keystone, Inc.

USPTO Granted Patents = 19

CIPO Patents = 4

EPO Patents = 2

Trademarks = 6

Forward Citations = 367

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21 inventors (with patents filed for the assignee):

Thomas R Berg (4 out of 34 patents)

Ralph H Schorr (4 out of 6 patents)

Nathan Reese (3 out of 5 patents)

4. Jay P Monaco (3 out of 11 patents)

5. Jeffrey Ruback (2 out of 3 patents)

6. Charles L Van Auken (2 out of 4 patents)

7. James A Gray (2 out of 2 patents)

8. Julius I Pershwitz (2 out of 5 patents)

9. Scott R Duncan (2 out of 4 patents)

10. James Myers (1 out of 6 patents)

11. John Rudibaugh (1 out of 3 patents)

12. Bradford Johnstone (1 out of 3 patents)

13. Mark Scott (1 out of 2 patents)

14. Anthony L Lucas (1 out of 9 patents)

15. Dan Schniers (1 out of 1 patent)

19 patents: Sort by Forward Citations

1. 7527003 - Railroad freight car sidebearing (2009-05-05),

2. 7469641 - Bolster and spring pockets for use with rail truck (2008-12-30),

3. 7389731 - Non-metallic insert for rail car bolster wedge (2008-06-24),

4. 7387074 - Railway truck bearing adapter (2008-06-17),

5. 7353759 - Sideframe with adapters to connect surface brackets (2008-04-08),

6. 7308855 - Railway truck pedestal bearing adapter (2007-12-18),

7. 7263930 - Railway truck suspension design (2007-09-04),

8. 7174837 - Three-piece motion control truck system (2007-02-13),

9. 7121212 - Ride control constant contact side bearing arrangement (2006-10-17),

10. 7069864 - Railway freight car end sill transition member (2006-07-04),

11. 7017498 - Multi-purpose universal sideframe for railway trucks (2006-03-28),

12. 6986432 - Common cast draft sill for type E and F draft gear (2006-01-17),

13. 6691625 - Friction wedge for a railroad car truck having a replaceable wear member (2004-02-17),

14. 6672224 - Railway car truck with a rocker seat (2004-01-06),

15. 6644214 - Constant contact side bearing (2003-11-11),

Asf-Keystone, Inc. is a specialized manufacturer based in Granite City, Illinois, focusing on advanced materials and innovative solutions for various industries. The company is known for its expertise in developing high-performance products that cater to the needs of sectors such as construction, automotive, and aerospace. With a commitment to quality and innovation, Asf-Keystone leverages cutting-edge technology to enhance product performance and sustainability, positioning itself as a key player in the materials science domain.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

19 Patents

#1 in Granite City, IL

#875 in Illinois

#17,113 in US

#32,592 in the World

Granite City, IL, United States of America

Asf-Keystone, Inc.

Forward Citations = 367

21 inventors:

Thomas R Berg (4 out of 34 patents)

Ralph H Schorr (4 out of 6 patents)

Nathan Reese (3 out of 5 patents)

4. Jay P Monaco (3 out of 11 patents)

5. Jeffrey Ruback (2 out of 3 patents)

Please report any incorrect information to [email protected]

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