Trademarks = 8

Forward Citations = 193

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5 inventors (with patents filed for the assignee):

Dennis L Simpson (5 out of 5 patents)

James D Brabb (2 out of 2 patents)

Dennis Joseph Denen (1 out of 45 patents)

4. Walter E Davitz (1 out of 5 patents)

5. Jack C Cordes (1 out of 1 patent)

7 patents: Sort by Forward Citations

1. 6047909 - Hopper discharge and pattern controlling apparatus for a broadcast (2000-04-11),

2. D338894 - Material spreader (1993-08-31),

3. D338893 - Material spreader (1993-08-31),

4. 4681265 - Swath-controlling variable chute and chute-activated damper for a (1987-07-21),

5. 4588133 - Combined chute and variable rate control assembly for a broadcast (1986-05-13),

6. 4358716 - Adjustable electrical power control for gas discharge lamps and the like (1982-11-09),

7. 4097359 - Workpiece-supporting rack (1978-06-27),

Company Overview

White Castle System, Inc. is an American fast-food restaurant chain specializing in sliders. It was founded in 1921 and is known for its small, square hamburgers called sliders. White Castle has over 375 locations in 13 states and is famous for its iconic white castle-shaped buildings. The company is committed to providing delicious, affordable food with fast service to its customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

7 Patents

#103 in Columbus, OH

#1,573 in Ohio

#39,907 in US

Columbus, OH, United States of America

White Castle System, Inc.

Forward Citations = 193

5 inventors:

Dennis L Simpson (5 out of 5 patents)

James D Brabb (2 out of 2 patents)

Dennis Joseph Denen (1 out of 45 patents)

4. Walter E Davitz (1 out of 5 patents)

5. Jack C Cordes (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: White Castle System, Inc.. Retrieved from https://idiyas.com/company/white-castle-system

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]