For the Inventor, By the Inventor

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Pittsburgh, PA, United States of America

Union Switch & Signal, Inc.

USPTO Granted Patents = 87

CIPO Patents = 2

Trademarks = 8

Forward Citations = 1,335

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78 inventors (with patents filed for the assignee):

Raymond C Franke (12 out of 15 patents)

Ronald R Capan (8 out of 8 patents)

James P Chew (8 out of 14 patents)

4. Kevin M McQuistian (7 out of 7 patents)

5. Leonard M Wydotis (6 out of 12 patents)

6. Daniel H Brushwood (6 out of 6 patents)

7. Theo C Giras (6 out of 6 patents)

8. Robert P Bozio (5 out of 5 patents)

9. Joseph A Profeta (5 out of 5 patents)

10. Richard S Jones (4 out of 8 patents)

11. Michael E Colbaugh (4 out of 4 patents)

12. Anthony G Ehrlich (3 out of 3 patents)

13. James P Brown (3 out of 3 patents)

14. Barry W Johnson (2 out of 30 patents)

15. Robert Dennis Pascoe (2 out of 5 patents)

Core Competencies:

Railway Track Circuit

Dynamic Train Positioning

Traffic Planning Optimization

Electronic Vital Relay

Railroad Switching Assembly

Modular Point Detector

Railway Switch Machine

Passive Detection Systems

Programmable Relay Driver

Automatic Train Supervision

Micropower Impulse Radar

Highway Crossing Signal

87 patents: Sort by Forward Citations

1. 7464904 - Method and system providing sleep and wake-up modes for railway track circuit unit (2008-12-16),

2. 7437605 - Hot standby method and apparatus (2008-10-14),

3. 7395140 - Geographic information system and method for monitoring dynamic train positions (2008-07-01),

4. 7386391 - Dynamic optimizing traffic planning method and system (2008-06-10),

5. 7296770 - Electronic vital relay (2007-11-20),

6. 7199883 - System and method for sensing position of a vehicle (2007-04-03),

7. 7168662 - Hollow tie railroad switching assembly (2007-01-30),

8. 6688559 - Modular point detector for railroad track switch (2004-02-10),

9. 6663052 - Modular point detector for railroad track signal (2003-12-16),

10. 6648276 - Drop down lug for railroad switch application (2003-11-18),

11. 6585194 - Modular point detector for railroad track switch (2003-07-01),

12. 6578799 - Modular point detector for railroad track signal (2003-06-17),

13. 6494409 - Railway code following apparatus (2002-12-17),

14. 6484974 - Controller for switch machine (2002-11-26),

15. 6474605 - Point detector sleeve for railroad switch machine and associated method (2002-11-05),

Union Switch & Signal, Inc. is a leading provider of railway control systems and signaling equipment. With over 100 years of experience, the company specializes in designing, manufacturing and servicing cutting-edge technology solutions for the railroad industry. Their innovative products ensure the safe and efficient operation of rail networks worldwide. Visit their website to learn more about their comprehensive range of signaling systems, interlocking products, and communication solutions.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

87 Patents

#26 in Pittsburgh, PA

#158 in Pennsylvania

#4,140 in US

#8,534 in the World

Pittsburgh, PA, United States of America

Union Switch & Signal, Inc.

Forward Citations = 1,335

78 inventors:

Raymond C Franke (12 out of 15 patents)

Ronald R Capan (8 out of 8 patents)

James P Chew (8 out of 14 patents)

4. Kevin M McQuistian (7 out of 7 patents)

5. Leonard M Wydotis (6 out of 12 patents)

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