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For the Inventor, By the Inventor

Granite City, IL, United States of America

Asf-keystone, Inc.


USPTO Granted Patents = 19



Trademarks = 6

Forward Citations = 367

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21 inventors (with patents filed for the assignee):

goldMedal Thomas R Berg (4 out of 32 patents)

silverMedal Ralph H Schorr (4 out of 6 patents)

bronzeMedal 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:

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 leading provider of high-quality building and construction materials. We specialize in supplying the construction industry with a comprehensive range of products, including steel framing, drywall, insulation, and accessories. Our commitment to exceptional customer service and reliable product delivery has made us a trusted partner for contractors, builders, and architects throughout the United States. With a strong focus on innovation and sustainability, we constantly strive to deliver solutions that meet the evolving needs of the construction market.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

19 Patents

#1 in Granite City, IL

#844 in Illinois

#16,627 in US

#31,708 in the World

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Granite City, IL, United States of America

Asf-keystone, Inc.

Forward Citations = 367

21 inventors:

goldMedal Thomas R Berg (4 out of 32 patents)

silverMedal Ralph H Schorr (4 out of 6 patents)

bronzeMedal Nathan Reese (3 out of 5 patents)

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

5.  Jeffrey Ruback (2 out of 3 patents)

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