Railcar Specialties, Inc.

Calculating rank

USPTO Granted Patents = 3

CIPO Patents = 1

Forward Citations = 14

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4 inventors (with patents filed for the assignee):

Russell M Loomis (1 out of 8 patents)

Mell R Thoman (1 out of 1 patent)

Denis R Brzezinski (1 out of 2 patents)

4. Ralph E Cummings (1 out of 1 patent)

5. Mell R Thoman (0 patent)

3 patents: Sort by Forward Citations

1. 4920894 - Modular anti-spin unit for railway car door (1990-05-01),

2. 4683678 - Adjustable railway boxcar door (1987-08-04),

3. 4638743 - Method of reinforcing a covered hopper car hatch (1987-01-27),

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USPTO Data Jan 1 1976 - Oct 27 2026

3 Patents

#15 in Alsip, IL

#3,453 in Illinois

#73,929 in US

Alsip, IL, United States of America

Railcar Specialties, Inc.

Forward Citations = 14

4 inventors:

Russell M Loomis (1 out of 8 patents)

Mell R Thoman (1 out of 1 patent)

Denis R Brzezinski (1 out of 2 patents)

4. Ralph E Cummings (1 out of 1 patent)

5. Mell R Thoman (0 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Railcar Specialties, Inc.. Retrieved from https://idiyas.com/company/railcar-specialties

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]

1 patent (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]