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Toronto, Canada

Urban Transportation Development Corporation Limited

USPTO Granted Patents = 25

Forward Citations = 280

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17 inventors (with patents filed for the assignee):

Roy E Smith (9 out of 13 patents)

Dennis P Chadwick (5 out of 10 patents)

W John Ballantyne (2 out of 2 patents)

4. George Sobolewski (2 out of 3 patents)

5. Heinz W Becker (2 out of 2 patents)

6. Harry Skoblenick (1 out of 4 patents)

7. William A Spurr (1 out of 1 patent)

8. William C Beattie (1 out of 1 patent)

9. John Stannard (1 out of 3 patents)

10. Josef Eichenhofer (1 out of 4 patents)

11. Karl Schubert (1 out of 1 patent)

12. Fred S Whitfield (1 out of 1 patent)

13. David H Woods (1 out of 1 patent)

14. Allen K Wallace (1 out of 1 patent)

15. Ernest Waddington (1 out of 1 patent)

Core Competencies:

Reaction Rail

Precast Railway Crossing Slab

Natural Gas Fuel Injection

Steered Axle

Load Distribution System

Brake Disc Design

Regenerative Braking

Linear Induction Motor

Articulated Vehicle

Torque Transmitting Linkage

Powered Radial Truck

Hoist Mechanism

25 patents: Sort by Forward Citations

1. 5127337 - Reaction rail (1992-07-07),

2. 4911360 - Precast railway crossing slab (1990-03-27),

3. 4846126 - Natural gas fuel injection (1989-07-11),

4. 4819566 - Stabilized steerable truck (1989-04-11),

5. 4817534 - Present invention relates to rail vehicles (1989-04-04),

6. 4802419 - Steered axle for a railway vehicle (1989-02-07),

7. 4742780 - Load distribution system for railway truck (1988-05-10),

8. 4729455 - Wheel assembly and brake therefor (1988-03-08),

9. 4700854 - Open top draw bar arrangement having removable wedge (1987-10-20),

10. 4679665 - Brake disc design for wheel mounted discs (1987-07-14),

11. 4671577 - Combined regenerative and friction braking system for a vehicle (1987-06-09),

12. 4642493 - Integrally air cooled linear induction motor (1987-02-10),

13. 4635560 - Contactless powering of LIM vehicle electrical system by recovery of LIM (1987-01-13),

14. 4570544 - Diagonally braced rail truck (1986-02-18),

15. 4542700 - Three axle steered truck (1985-09-24),

Company Overview

Urban Transportation Development Corporation Limited is a Canadian company based in Toronto, specializing in the development and manufacturing of advanced transportation solutions. The organization focuses on innovative technologies in urban transit systems, including light rail and automated transit vehicles. With a commitment to enhancing urban mobility, UTDC plays a significant role in shaping sustainable transportation infrastructure, contributing to the efficiency and effectiveness of public transit systems across various regions.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

25 Patents

#68 in Toronto

#581 in Canada

#25,710 in the World

Toronto, Canada

Urban Transportation Development Corporation Limited

Forward Citations = 280

17 inventors:

Roy E Smith (9 out of 13 patents)

Dennis P Chadwick (5 out of 10 patents)

W John Ballantyne (2 out of 2 patents)

4. George Sobolewski (2 out of 3 patents)

5. Heinz W Becker (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Urban Transportation Development Corporation Limited. Retrieved from https://idiyas.com/company/urban-transportation-development

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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