Carol Stream, IL, United States of America

Prince Castle Inc.


USPTO Granted Patents = 163

% Expired Patents = 25.2


Trademarks = 16

Forward Citations = 1,962

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131 inventors (with patents filed for the assignee):

goldMedal Loren Jay Veltrop (79 out of 97 patents)

silverMedal Kyle Thomas Kestner (26 out of 40 patents)

bronzeMedal Eric W Larson (22 out of 67 patents)

4.  Scott R Hammac (21 out of 28 patents)

5.  Mark E Fastabend (21 out of 26 patents)

6.  Charles B Hartfelder (20 out of 23 patents)

7.  Karl Ronald Heinze (18 out of 20 patents)

8.  Frank Anthony Agnello (17 out of 17 patents)

9.  Eugene Stanley Maslana (16 out of 21 patents)

10.  Richard Bauer (14 out of 25 patents)

11.  Christine Suen Laub (14 out of 16 patents)

12.  Aleksandr Yazvin (14 out of 22 patents)

13.  Christopher F Lyons (13 out of 149 patents)

14.  Edward T Eaton (13 out of 32 patents)

15.  Michael Graef (12 out of 18 patents)


Core Competencies:
Conveyor Belt
Food Holding Bin
Refrigeration Device
Modular System
Produce Slicer
Blade Set
Packaging Dispenser
Heating System
Multi-Zone Bin
Liquid Dispenser
Dispenser Valve

163 patents:

Company Overview
Prince Castle Inc., based in Carol Stream, IL, specializes in innovative food holding systems designed to enhance food quality and operational efficiency in the foodservice industry. The company focuses on developing advanced technologies such as conveyor belts, food holding bins, and modular systems that cater to diverse culinary needs. Their product offerings also include refrigeration devices, produce slicers, blade sets, packaging dispensers, and heating systems, all aimed at optimizing food preparation and service processes.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

Prince Castle Inc. USPTO Patent Assignee Logo
163 Patents

#1 in Carol Stream, IL

#151 in Illinois

#2,439 in US

#5,071 in the World

Carol Stream, IL (US)
Carol Stream, IL, United States of America
Forward Citations = 1,962

131 inventors:

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Prince Castle Inc.. Retrieved from https://idiyas.com/company/prince-castle

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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