Forward Citations = 25

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8 inventors (with patents filed for the assignee):

Philip C McCray (5 out of 7 patents)

John K Kershaw (3 out of 3 patents)

Mark T Plyler (1 out of 4 patents)

4. Milton H Lee, Jr (1 out of 1 patent)

5. George B Pugh, Iii (1 out of 1 patent)

6. Phil McCray (1 out of 1 patent)

7. Steven L Atchison (1 out of 1 patent)

8. Rama N Bail (1 out of 2 patents)

8 patents: Sort by Forward Citations

1. 8544509 - Adzer skid assembly and method of use (2013-10-01),

2. 7000659 - Adzer mount assembly (2006-02-21),

3. 5600903 - Ballast shoulder cleaner (1997-02-11),

4. 5493795 - Ballast regulator having improved track cleaning means (1996-02-27),

5. 5459951 - Ballast shoulder cleaner (1995-10-24),

6. 5183118 - High-capacity ballast reconditioning apparatus (1993-02-02),

7. 5109775 - Ballast reconditioning apparatus with multiple excavating wheels and (1992-05-05),

8. 5029649 - Ballast reconditioning apparatus (1991-07-09),

Company Overview

Knox Kershaw, Inc. is a leading manufacturer of railway maintenance equipment and snow removal machines. Established in 1924, the company has been providing innovative solutions for the railroad industry. Their products include ballast regulators, snow fighters, and tie handlers, designed to improve the efficiency and safety of railway operations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

8 Patents

#6 in Montgomery, AL

#152 in Alabama

#35,941 in US

Montgomery, AL, United States of America

Knox Kershaw, Inc.

Forward Citations = 25

8 inventors:

Philip C McCray (5 out of 7 patents)

John K Kershaw (3 out of 3 patents)

Mark T Plyler (1 out of 4 patents)

4. Milton H Lee, Jr (1 out of 1 patent)

5. George B Pugh, Iii (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Knox Kershaw, Inc.. Retrieved from https://idiyas.com/company/knox-kershaw

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]