For the Inventor, By the Inventor

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St. Petersburg, FL, United States of America

Security Tag Systems, Inc.

USPTO Granted Patents = 25

Forward Citations = 590

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19 inventors (with patents filed for the assignee):

Lincoln H Charlot, Jr (9 out of 16 patents)

Fred W Herman (7 out of 7 patents)

Dennis L Hogan (5 out of 5 patents)

4. Lucian G Ferguson (4 out of 10 patents)

5. Ming R Lian (4 out of 4 patents)

6. John L Lynch (3 out of 3 patents)

7. William R Menyhert (2 out of 3 patents)

8. Lincoln H Charlot (2 out of 4 patents)

9. Subrata Dey (2 out of 2 patents)

10. Larry K Canipe (1 out of 1 patent)

11. Carter W Clarke, Jr (1 out of 1 patent)

12. Donald J Beach (1 out of 1 patent)

13. William D Thomas (1 out of 1 patent)

14. Edward J DiCarlo (1 out of 1 patent)

15. Robert C Thurmond (1 out of 1 patent)

Core Competencies:

Frequency Divider

Transponder

Tamper Detection

EAS Detection

Magnetic Coupling

Batteryless Technology

Theft Deterrent

Magnetometer

Secure Paper Product

Pin-Clutch Mechanism

Amorphous Magnetic Alloy

Force-Sensitive Device

25 patents: Sort by Forward Citations

1. 5414412 - Frequency dividing transponder, including amorphous magnetic alloy and (1995-05-09),

2. 5406262 - Adjusting magnetic bias field intensity in EAS presence detection system (1995-04-11),

3. 5355120 - Frequency-dividing-transponder tag (1994-10-11),

4. 5347262 - Theft-deterrent device providing force-sensitive tamper detection (1994-09-13),

5. 5337459 - Magnetically releasable clamp (1994-08-16),

6. 5241298 - Electrically-and-magnetically-coupled, batteryless, portable, frequency (1993-08-31),

7. 5140836 - Theft-deterrent device including clamp (1992-08-25),

8. 5069047 - Release of pin-clutch mechanism in theft-deterrent device (1991-12-03),

9. 5065138 - Magnetically-coupled two-resonant-circuit, frequency divider for (1991-11-12),

10. 5065137 - Magnetically-coupled, two-resonant-circuit, frequency-division tag (1991-11-12),

11. 5054172 - Expulsion of detrimental substance from theft-deterrent device (1991-10-08),

12. 5031287 - Detrimental-substance-containing theft-deterrent device (1991-07-16),

13. 5022244 - Pin-clutch mechanism for theft-deterrent device (1991-06-11),

14. 5015953 - Magnetometer for detecting DC magnetic field variations (1991-05-14),

15. 4968972 - Conversion of bias strip in a frequency-dividing-transponder tag into a (1990-11-06),

Company Overview

Security Tag Systems, Inc. is a St. Petersburg, Florida-based company specializing in the development and manufacturing of advanced security solutions. The organization focuses on electronic article surveillance (EAS) systems, which are designed to prevent theft in retail environments. By integrating innovative technologies, Security Tag Systems aims to enhance loss prevention strategies for businesses, ensuring the protection of merchandise while maintaining a seamless shopping experience for customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

25 Patents

#9 in St. Petersburg, FL

#339 in Florida

#13,364 in US

#25,710 in the World

St. Petersburg, FL, United States of America

Security Tag Systems, Inc.

Forward Citations = 590

19 inventors:

Lincoln H Charlot, Jr (9 out of 16 patents)

Fred W Herman (7 out of 7 patents)

Dennis L Hogan (5 out of 5 patents)

4. Lucian G Ferguson (4 out of 10 patents)

5. Ming R Lian (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Security Tag Systems, Inc.. Retrieved from https://idiyas.com/company/security-tag-systems

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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