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Round Rock, TX, United States of America

Carroll Touch Inc.

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USPTO Granted Patents = 14

Forward Citations = 859

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16 inventors (with patents filed for the assignee):

James E Garrett (3 out of 5 patents)

Terence J Knowles (3 out of 32 patents)

Paul B Lucas (3 out of 3 patents)

4. John K Carstedt (3 out of 3 patents)

5. Wayne J Wehrer (2 out of 9 patents)

6. Arthur B Carroll (2 out of 3 patents)

7. Timothy E Masters (2 out of 4 patents)

8. Stewart E Hough (2 out of 2 patents)

9. Paul R Hunter (1 out of 6 patents)

10. Alan L Bartlett (1 out of 1 patent)

11. Andrew L Wolfe (1 out of 3 patents)

12. Gary L Barrett (1 out of 3 patents)

13. Terrence J Knowles (1 out of 1 patent)

14. Del Ogren (1 out of 1 patent)

15. Jianming Huang (1 out of 1 patent)

14 patents: Sort by Forward Citations

1. 5451723 - Acoustic wave touch panel for use with a non-active stylus (1995-09-19),

2. 5380959 - Controller for an acoustic touch panel (1995-01-10),

3. 5334805 - Controller for an acoustic wave touch panel (1994-08-02),

4. 5329070 - Touch panel for an acoustic touch position sensor (1994-07-12),

5. 5055840 - Infrared touch input device and light emitted activation circuit (1991-10-08),

6. 5041701 - Edge linearization device for a contact input system (1991-08-20),

7. 4988983 - Touch entry system with ambient compensation and programmable (1991-01-29),

8. 4943806 - Touch input device having digital ambient light sampling (1990-07-24),

9. 4818859 - Low profile opto-device assembly with specific optoelectronic lead mount (1989-04-04),

10. 4761637 - Touch input device (1988-08-02),

11. 4713534 - Phototransistor apparatus with current injection ambient compensation (1987-12-15),

12. 4684801 - Signal preconditioning for touch entry device (1987-08-04),

13. 4672364 - Touch input device having power profiling (1987-06-09),

14. 4645920 - Early fault detection in an opto-matrix touch input device (1987-02-24),

Company Overview

Carroll Touch Inc., based in Round Rock, Texas, specializes in the development and manufacturing of advanced touch technology solutions. The company focuses on creating innovative touch screen interfaces and related products that enhance user interaction across various industries. With a commitment to quality and performance, Carroll Touch serves sectors such as retail, healthcare, and industrial applications, providing reliable and intuitive touch solutions that meet the evolving needs of its clients.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

14 Patents

#17 in Round Rock, TX

#1,380 in Texas

#22,350 in US

#42,333 in the World

Round Rock, TX, United States of America

Carroll Touch Inc.

Forward Citations = 859

16 inventors:

James E Garrett (3 out of 5 patents)

Terence J Knowles (3 out of 32 patents)

Paul B Lucas (3 out of 3 patents)

4. John K Carstedt (3 out of 3 patents)

5. Wayne J Wehrer (2 out of 9 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Carroll Touch Inc.. Retrieved from https://idiyas.com/company/carroll-touch

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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