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For the Inventor, By the Inventor

Lisle, IL, United States of America

National Castings, Inc.


USPTO Granted Patents = 17

Trademarks = 1

Forward Citations = 453

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10 inventors (with patents filed for the assignee):

goldMedal Hans B Weber (10 out of 14 patents)

silverMedal Jack R Long (5 out of 7 patents)

bronzeMedal Scott A Beatty (1 out of 6 patents)

4.  Richard A Openchowski (1 out of 2 patents)

5.  Andreas M Haas (1 out of 2 patents)

6.  Edward Chi (1 out of 1 patent)

7.  Douglas W Smith (1 out of 1 patent)

8.  Richard M Hanula (1 out of 9 patents)

9.  Fred C Kulieke, Jr (1 out of 2 patents)

10.  Stephen W Becker (1 out of 1 patent)


17 patents:

1. 5954212 - Lightweight knuckle for a railroad car coupler (1999-09-21),
2. 5632208 - Multi-axle railroad car truck (1997-05-27),
3. 5593051 - Slackless cushioning device for railroad cars (1997-01-14),
4. 5524552 - Single axle truck for large railroad cars (1996-06-11),
5. 5507400 - Slackless drawbar or coupler with swivel mounting (1996-04-16),
6. 5463964 - Rocker seat connection (1995-11-07),
7. 5327837 - Bolster of a railroad car truck with varying cross-sectional shape to (1994-07-12),
8. 5241913 - Reinforced bolster for a railroad car truck (1993-09-07),
9. 5239932 - Force dampening mechanism of a railroad car truck (1993-08-31),
10. 5226369 - Sideframe for a railroad car truck (1993-07-13),
11. 5139161 - Automatic actuator for coupler knuckle-assembly of a railway passenger (1992-08-18),
12. 5131548 - Slackless, resilient drawbar system for a railway car (1992-07-21),
13. 5027716 - Stabilized swing-motion truck for railway cars (1991-07-02),
14. 4867071 - Truck-mounted articulated connector for railway cars (1989-09-19),
15. 4766819 - Saddle frame for passive steering single-axle truck for a railway (1988-08-30),
Company Overview
National Castings, Inc. is a prominent manufacturer specializing in high-quality castings for various industries, including automotive and industrial applications. The company is known for its expertise in producing complex components that meet rigorous performance standards. With a focus on innovation and advanced manufacturing techniques, National Castings leverages its technical capabilities to deliver tailored solutions that enhance product durability and efficiency. Headquartered in Lisle, Illinois, the company serves a diverse clientele across North America.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

17 Patents

#12 in Lisle, IL

#975 in Illinois

#18,903 in US

#35,948 in the World

Lisle, IL (US)
Lisle, IL, United States of America

National Castings, Inc.

Forward Citations = 453

10 inventors:

goldMedal Hans B Weber (10 out of 14 patents)

silverMedal Jack R Long (5 out of 7 patents)

bronzeMedal Scott A Beatty (1 out of 6 patents)

4.  Richard A Openchowski (1 out of 2 patents)

5.  Andreas M Haas (1 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: National Castings, Inc.. Retrieved from https://idiyas.com/company/national-castings

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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