% Expired Patents = 20.0

CIPO Patents = 2

Trademarks = 1

Forward Citations = 52

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4 inventors (with patents filed for the assignee):

Paul Hewitt (2 out of 2 patents)

Stephen R Kuhn (2 out of 17 patents)

Ray Hoyer (2 out of 3 patents)

4. Jack R Long (1 out of 7 patents)

5. John L Donovan (10 patents)

5 patents: Sort by Forward Citations

1. 6631685 - Dual friction wear plate assembly for a railcar side frame saddle (2003-10-14),

2. 6581527 - Adjustable side bearing for a railcar (2003-06-24),

3. 6568641 - Electrically operated railroad switch machine (2003-05-27),

4. 6427950 - Electrically operated railroad switch machine (2002-08-06),

5. 6422154 - Three-piece railway truck frame having a selectively removable bolster (2002-07-23),

Company Overview

Meridian Rail Information Systems Corp. is a leading provider of innovative railway management software solutions. With over 20 years of experience in the industry, we offer comprehensive products and services that empower railroads to optimize operations, improve safety, and increase efficiency. Our cutting-edge technology helps clients streamline scheduling, dispatching, and maintenance processes, ultimately enhancing overall performance and profitability.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

5 Patents

#18 in Lombard, IL

#2,426 in Illinois

#51,644 in US

Lombard, IL, United States of America

Meridian Rail Information Systems Corp.

Forward Citations = 52

4 inventors:

Paul Hewitt (2 out of 2 patents)

Stephen R Kuhn (2 out of 17 patents)

Ray Hoyer (2 out of 3 patents)

4. Jack R Long (1 out of 7 patents)

5. John L Donovan (10 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Meridian Rail Information Systems Corp.. Retrieved from https://idiyas.com/company/meridian-rail-information-systems

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]

2 patents (CIPO):

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]