For the Inventor, By the Inventor

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Irvine, CA, United States of America

Printronix, Inc.

USPTO Granted Patents = 98

% Expired Patents = 18.4

EPO Patents = 7

Trademarks = 10

Forward Citations = 1,062

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77 inventors (with patents filed for the assignee):

Gordon B Barrus (36 out of 36 patents)

Lihu Chiu (15 out of 19 patents)

Norman E Farb (13 out of 14 patents)

4. Dennis R White (8 out of 21 patents)

5. Leo J Emenaker (8 out of 8 patents)

6. Jerry Matula (8 out of 10 patents)

7. Kevin P Moore (7 out of 7 patents)

8. Andrew W Edwards (7 out of 7 patents)

9. Richard E Schumaker (6 out of 9 patents)

10. Y Grant Chang (6 out of 6 patents)

11. John Stanley Kinley (6 out of 6 patents)

12. Rudy Concepcion, Jr (5 out of 7 patents)

13. John W Gemmell (5 out of 5 patents)

14. Theodore A Chapman (5 out of 5 patents)

15. Jeng-dung Jou (4 out of 5 patents)

Core Competencies:

Ribbon Speed Control

Line Printer

RFID Systems

Thermal Printer

Print Correlation

Hammerbank

Paper Feed System

Printer Ink

Magnetic Actuators

Barcode Applications

Wear Indicators

98 patents: Sort by Forward Citations

1. 12728657 - Adaptive ribbon speed control systems and methods (2026-09-08),

2. 12208635 - Adaptive ribbon speed control systems and methods (2025-01-28),

3. 8789922 - Line printer hammer banks (2014-07-29),

4. 8767027 - Preventing coil overheating in line printer hammer banks (2014-07-01),

5. 8714849 - Intelligent ribbon cartridge (2014-05-06),

6. 8657409 - Line printer hammer banks (2014-02-25),

7. 8317420 - Ribbon cassette (2012-11-27),

8. 7891892 - Printer read after print correlation method (2011-02-22),

9. 7646498 - Thermal printer read after print correlation apparatus (2010-01-12),

10. 7540247 - Printer ribbon with sewn feature and apparatus for forming same (2009-06-02),

11. 7513431 - Method and system for aiming an RFID reader (2009-04-07),

12. 7479883 - RFID verifier (2009-01-20),

13. 7457849 - Controlled firewall penetration for management of discrete devices (2008-11-25),

14. 7400989 - RFID verifier system with grade classification (2008-07-15),

15. 7390135 - Ribbon identification (2008-06-24),

Printronix, Inc. is a leading provider of advanced printing solutions, specializing in high-performance printer technology. Based in Irvine, California, the company focuses on developing innovative products such as line printers, thermal printers, and RFID systems. Their expertise extends to critical technology topics including ribbon speed control, print correlation, and efficient paper feed systems. Printronix is committed to enhancing printing efficiency and reliability across various industries, ensuring that their solutions meet the evolving needs of their customers.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Printronix, Inc.

98 Patents

#36 in Irvine, CA

#891 in California

#3,854 in US

#7,918 in the World

Irvine, CA, United States of America

Printronix, Inc.

Forward Citations = 1,062

77 inventors:

Gordon B Barrus (36 out of 36 patents)

Lihu Chiu (15 out of 19 patents)

Norman E Farb (13 out of 14 patents)

4. Dennis R White (8 out of 21 patents)

5. Leo J Emenaker (8 out of 8 patents)

Please report any incorrect information to [email protected]

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