For the Inventor, By the Inventor

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Bloomington, MN, United States of America

Vtc Inc.

USPTO Granted Patents = 74

Trademarks = 3

Forward Citations = 931

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43 inventors (with patents filed for the assignee):

Tuan V Ngo (24 out of 44 patents)

Craig Matthew Brannon (13 out of 22 patents)

John J Price, Jr (9 out of 20 patents)

4. John S Shier (9 out of 12 patents)

5. Raymond E Barnett (7 out of 9 patents)

6. Douglas R Peterson (6 out of 7 patents)

7. Richard E Hester (6 out of 9 patents)

8. William W Leake (6 out of 6 patents)

9. John D Leighton (4 out of 21 patents)

10. Russell V Solstad (4 out of 4 patents)

11. David E Sutliff (3 out of 3 patents)

12. Jeffrey A Gleason (3 out of 3 patents)

13. Douglas Warren Dean (2 out of 17 patents)

14. Robert John Schuelke (2 out of 15 patents)

15. Matthew F Schmidt (2 out of 2 patents)

Core Competencies:

Magnetoresistive Sensors

Preamplifier Bias Circuit

High Performance Write Driver

Differential Transimpedance Amplifier

Automatic Tuning Circuit

Low Noise Transistor

Current Mirror Circuit

Data Separator Circuit

AC Coupled Amplifier

H-Bridge Driver Circuit

Servo Demodulation Technique

Multiplexer Circuit

74 patents: Sort by Forward Citations

1. 6111716 - Referenced magnetoresistives sensor band pass preamplifier (2000-08-29),

2. 6107888 - Method to equalize input currents to differential-to-single-ended (2000-08-22),

3. 6020695 - Three-phase generator boost circuit (2000-02-01),

4. 6005733 - Preamplifier bias circuit for use in an AC coupled magnetoresistive read (1999-12-21),

5. 5994951 - Automatic-tuning circuit for integrated continuous-time MOSFET-C filters (1999-11-30),

6. 5990710 - High performance write driver for magnetic inductive recording head (1999-11-23),

7. 5986832 - Write driver with Schottky diodes to improve switching rate and (1999-11-16),

8. 5982574 - Automatic tracking frequency servo demodulation technique for DVCR (1999-11-09),

9. 5942934 - On-chip regulator providing good high frequency rejection and noise (1999-08-24),

10. 5920729 - Apparatus for providing pair of complementary outputs with first and (1999-07-06),

11. 5914630 - MR head preamplifier with output signal amplitude which is independent (1999-06-22),

12. 5900779 - Differential transimpedance amplifier (1999-05-04),

13. 5894237 - Write driver with buffer circuits between pull-up resistors and upper (1999-04-13),

14. 5886568 - Open-loop MR biasing circuit with high power supply and common mode (1999-03-23),

15. 5880626 - Active damping for a disk drive write circuit (1999-03-09),

VTC Inc. is a leading technology consulting firm based in New York. With over 20 years of experience, VTC offers a wide range of IT services including software development, network infrastructure design, and cybersecurity solutions. Our team of experts is dedicated to helping businesses thrive in the digital age through innovative and customized technology solutions. Visit our website for more information about our services and how we can assist your organization in achieving its technology goals.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

74 Patents

#4 in Bloomington, MN

#134 in Minnesota

#4,760 in US

#9,724 in the World

Bloomington, MN, United States of America

Vtc Inc.

Forward Citations = 931

43 inventors:

Tuan V Ngo (24 out of 44 patents)

Craig Matthew Brannon (13 out of 22 patents)

John J Price, Jr (9 out of 20 patents)

4. John S Shier (9 out of 12 patents)

5. Raymond E Barnett (7 out of 9 patents)

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