For the Inventor, By the Inventor

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Chicago, IL, United States of America

Ardco, Inc.

USPTO Granted Patents = 35

% Expired Patents = 2.9

Forward Citations = 1,083

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30 inventors (with patents filed for the assignee):

Melvin C Kaspar (12 out of 12 patents)

Gerald J Bockwinkel (7 out of 7 patents)

Paul J Artwohl (7 out of 7 patents)

4. Matthew Rolek (6 out of 6 patents)

5. Jeffery T Kostos (4 out of 4 patents)

6. Robert G O'Neal (3 out of 5 patents)

7. Kenneth E Vogel (3 out of 8 patents)

8. Richard A Mamelson (3 out of 3 patents)

9. Francis M Niekrasz (3 out of 3 patents)

10. Douglas B Laird (2 out of 2 patents)

11. David Robinson (2 out of 2 patents)

12. Frank M Niekrasz (2 out of 3 patents)

13. Richard C Kim (1 out of 4 patents)

14. Damon Floyd Kvamme (1 out of 30 patents)

15. Christopher D Hensch (1 out of 1 patent)

Core Competencies:

Refrigeration

Defrost Systems

Insulated Doors

Lighting Systems

Display Cabinets

Mullion Assembly

Door Mechanisms

Refrigerant Usage

Thermal Insulation

Safety Latch

Glass Front

Adjustable Mounting

35 patents: Sort by Forward Citations

1. 6481231 - Hot gas defrost refrigeration system (2002-11-19),

2. 6286322 - Hot gas defrost refrigeration system (2001-09-11),

3. 6125652 - Apparatus for minimizing refrigerant usage (2000-10-03),

4. 5715889 - Heat exchanger and the method for producing same (1998-02-10),

5. 5645330 - Refrigerated display cabinets with improved mullion assembly (1997-07-08),

6. 5622414 - Refrigerator display cabinet with thermally insulated pivotable all (1997-04-22),

7. 5471372 - Lighting system for commercial refrigerator doors (1995-11-28),

8. 5255473 - Refrigerator door assembly with stylized substantially all glass front (1993-10-26),

9. 5244273 - Door hold-open device (1993-09-14),

10. 5214877 - Refrigerator door assembly with venting system (1993-06-01),

11. 5207490 - Safety latch for the lid of a lift-top cabinet (1993-05-04),

12. 5161289 - Header machine (1992-11-10),

13. 5129246 - Tubing expander (1992-07-14),

14. 5116274 - Refrigerator display cabinet with thermally insulated pivotable window (1992-05-26),

15. 5111618 - Refrigerator door assembly with stylized substantially all glass front (1992-05-12),

Company Overview

Ardco, Inc. is a Chicago-based company specializing in the development and manufacturing of advanced industrial solutions. The organization focuses on creating innovative products and technologies that enhance operational efficiency across various sectors. Ardco's expertise spans multiple domains, including automation, material handling, and custom engineering solutions, catering to a diverse clientele. With a commitment to quality and innovation, Ardco aims to address the evolving needs of industries in a competitive marketplace.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

35 Patents

#136 in Chicago, IL

#539 in Illinois

#9,756 in US

#19,181 in the World

Chicago, IL, United States of America

Ardco, Inc.

Forward Citations = 1,083

30 inventors:

Melvin C Kaspar (12 out of 12 patents)

Gerald J Bockwinkel (7 out of 7 patents)

Paul J Artwohl (7 out of 7 patents)

4. Matthew Rolek (6 out of 6 patents)

5. Jeffery T Kostos (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Ardco, Inc.. Retrieved from https://idiyas.com/company/ardco

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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