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For the Inventor, By the Inventor

Rockford, IL, United States of America

Southern Imperial, Inc.

Calculating rank
USPTO Granted Patents = 148

% Expired Patents = 16.9


Trademarks = 11

Forward Citations = 3,580

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33 inventors (with patents filed for the assignee):

goldMedal Stanley C Valiulis (45 out of 48 patents)

silverMedal Thomas E Valiulis (44 out of 44 patents)

bronzeMedal Patrick J Barkdoll (34 out of 38 patents)

4.  Craig Zadak (24 out of 24 patents)

5.  Thomas O Nagel (12 out of 110 patents)

6.  Robert Louis Northrup, Jr (7 out of 7 patents)

7.  Michael E Brinkman (7 out of 12 patents)

8.  Brent O Ewing (6 out of 51 patents)

9.  Kirk Lewis (6 out of 9 patents)

10.  Richard D Barnes (6 out of 6 patents)

11.  Joerg Niederhuefner (4 out of 4 patents)

12.  Peter T Valiulis (4 out of 4 patents)

13.  Joseph E Gormley (4 out of 7 patents)

14.  Stanley J Valiulis (4 out of 14 patents)

15.  Nicholas C Juric (3 out of 8 patents)


Core Competencies:
Retail Merchandise Tray
Security Device
Pusher Tray
Display Hook
Label Holder
Alarm System
Merchandise Hanger
Inventory Lock
Signal Emitting Device
Adjustable Barriers
Gondola Mounting
Gravity-Fed Display

148 patents:

1. 10251494 - Retail merchandise tray (2019-04-09),
2. 10180017 - Security device with reusable base member (2019-01-15),
3. 10121341 - Retail merchandise hook with radio transmission (2018-11-06),
4. 10034557 - Retail merchandise tray (2018-07-31),
5. D803034 - Locking peg board back (2017-11-21),
6. D796579 - Label holder (2017-09-05),
7. 9672711 - System and method for integrated product protection (2017-06-06),
8. 9629480 - Merchandise pusher tray with adjustable side barriers (2017-04-25),
9. 9537275 - Electrified bus bar and bus bar system for retail merchandise displays (2017-01-03),
10. D774468 - Retail display cable (2016-12-20),
11. 9486090 - Retail shelf (2016-11-08),
12. D762174 - Retail display component (2016-07-26),
13. 9392884 - Tilted pusher tray (2016-07-19),
14. 9324220 - Theft detection device and method for controlling same (2016-04-26),
15. 9320367 - Snap-in pusher (2016-04-26),
Company Overview
Southern Imperial, Inc. is a leading manufacturer specializing in retail merchandise displays, providing innovative solutions to enhance product visibility and security in retail environments. Based in Rockford, Illinois, the company focuses on developing a wide range of display products, including merchandise trays, security devices, and inventory management systems. Their expertise extends to various display accessories such as hooks, label holders, and alarm systems, catering to the diverse needs of retailers aiming to optimize their merchandising strategies.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

Southern Imperial, Inc. USPTO Patent Assignee Logo
148 Patents

#3 in Rockford, IL

#161 in Illinois

#2,668 in US

#5,525 in the World

Rockford, IL (US)
Rockford, IL, United States of America

Southern Imperial, Inc.

Forward Citations = 3,580

33 inventors:

goldMedal Stanley C Valiulis (45 out of 48 patents)

silverMedal Thomas E Valiulis (44 out of 44 patents)

bronzeMedal Patrick J Barkdoll (34 out of 38 patents)

4.  Craig Zadak (24 out of 24 patents)

5.  Thomas O Nagel (12 out of 110 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Southern Imperial, Inc.. Retrieved from https://idiyas.com/company/southern-imperial

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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