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For the Inventor, By the Inventor

Westminster, MD, United States of America

Knorr Brake Holding Corporation

Calculating rank
USPTO Granted Patents = 22


Trademarks = 4

Forward Citations = 220

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17 inventors (with patents filed for the assignee):

goldMedal Thomas H Engle (9 out of 65 patents)

silverMedal John J Allen (4 out of 79 patents)

bronzeMedal Kevin B Root (4 out of 27 patents)

4.  Ronald O Newton (4 out of 30 patents)

5.  Peter F Lynch (3 out of 70 patents)

6.  David O Chase (3 out of 22 patents)

7.  Scott W Oslecki (3 out of 5 patents)

8.  Martin V Maloney (3 out of 7 patents)

9.  Robert P Gayfer (2 out of 10 patents)

10.  Zdzislaw Samulak (1 out of 6 patents)

11.  Anthony W Lumbis (1 out of 26 patents)

12.  Thomas M Bogenschutz (1 out of 11 patents)

13.  Robert Gayfer (1 out of 1 patent)

14.  Walter E Rojecki (1 out of 6 patents)

15.  Heinz-Jurgen Listl (1 out of 1 patent)


22 patents:

1. 5480042 - Lock and coupler for a railway ramp car having fluid and electrical (1996-01-02),
2. 5462394 - Latchmaster sliding pull up hitch (1995-10-31),
3. 5452982 - System for positioning and supporting trailers on railcars (1995-09-26),
4. D361824 - Fluid brake control valve (1995-08-29),
5. 5445083 - Lock and coupler for a railway ramp car (1995-08-29),
6. 5412572 - Computer controlled railway brake equipment (1995-05-02),
7. 5400874 - Single actuator truck mount brake system (1995-03-28),
8. 5387030 - Plural service rate sensitivity control valve (1995-02-07),
9. 5369587 - Computer controlled railway brake equipment (1994-11-29),
10. 5303157 - Single handle locomotive controller (1994-04-12),
11. 5271335 - Articulation assembly for rail cars (1993-12-21),
12. 5249125 - Computer controlled railway brake equipment (1993-09-28),
13. 5246081 - Method and apparatus for semitrailer transfer (1993-09-21),
14. 5222443 - Railway ramp car (1993-06-29),
15. 5211450 - Empty/load valve (1993-05-18),
Company Overview
Knorr Brake Holding Corporation, headquartered in Westminster, MD, specializes in the development and manufacturing of braking systems and related technologies for rail and commercial vehicles. The company is recognized for its innovative solutions that enhance safety, efficiency, and performance in transportation. With a strong focus on research and development, Knorr Brake is committed to advancing technologies that meet the evolving needs of the global transportation industry, ensuring reliability and sustainability in its products.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

22 Patents

#1 in Westminster, MD

#200 in Maryland

#15,057 in US

#28,822 in the World

Westminster, MD (US)
Westminster, MD, United States of America

Knorr Brake Holding Corporation

Forward Citations = 220

17 inventors:

goldMedal Thomas H Engle (9 out of 65 patents)

silverMedal John J Allen (4 out of 79 patents)

bronzeMedal Kevin B Root (4 out of 27 patents)

4.  Ronald O Newton (4 out of 30 patents)

5.  Peter F Lynch (3 out of 70 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Knorr Brake Holding Corporation. Retrieved from https://idiyas.com/company/knorr-brake-holding

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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