For the Inventor, By the Inventor

Enter assignee name

San Diego, CA, United States of America

American Technology Corporation

USPTO Granted Patents = 75

% Expired Patents = 16.0

Trademarks = 6

Forward Citations = 2,502

Loading Chart...

Loading Chart...

29 inventors (with patents filed for the assignee):

James J Croft, Iii (33 out of 43 patents)

Elwood Grant Norris (28 out of 106 patents)

Michael J Patrikios (10 out of 10 patents)

4. Joseph O Norris (7 out of 7 patents)

5. Michael E Spencer (6 out of 6 patents)

6. Guillermo Coto (4 out of 9 patents)

7. Jeevan G Bank (4 out of 4 patents)

8. Curtis L Welter (4 out of 4 patents)

9. Alan Robert Selfridge (3 out of 10 patents)

10. Pierre Khuri-Yakub (3 out of 5 patents)

11. David Graebener (3 out of 3 patents)

12. Terry Conrad (3 out of 3 patents)

13. James A Markus (3 out of 3 patents)

14. Rodney H Hawkins (3 out of 3 patents)

15. John Wnek (2 out of 2 patents)

Core Competencies:

Parametric Loudspeaker

Ultrasonic Emitter

Acoustic Device

Audio Feedback

Dynamic Power Sharing

Electrostatic Speaker

Planar-Magnetic Speaker

Directional Emitter

Holographic Speaker

Signal Processing

Piezoelectric Film

Bandpass Loudspeaker

75 patents: Sort by Forward Citations

1. 8199931 - Parametric loudspeaker with improved phase characteristics (2012-06-12),

2. 7729498 - Modulator processing for a parametric speaker system (2010-06-01),

3. 7596229 - Parametric audio system for operation in a saturated air medium (2009-09-29),

4. 7564981 - Method of adjusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same (2009-07-21),

5. 7551062 - Directional acoustic device (2009-06-23),

6. 7376236 - Piezoelectric film sonic emitter (2008-05-20),

7. 7343017 - System for playback of pre-encoded signals through a parametric loudspeaker system (2008-03-11),

8. 7319763 - Power amplification for parametric loudspeakers (2008-01-15),

9. 7298853 - Parametric virtual speaker and surround-sound system (2007-11-20),

10. 7298852 - Dynamic power sharing in a multi-channel sound system (2007-11-20),

11. 7251342 - Single end planar magnetic speaker (2007-07-31),

12. 7224808 - Dynamic carrier system for parametric arrays (2007-05-29),

13. 7224219 - Modulator-amplifier (2007-05-29),

14. 7167827 - Audio information leaflet system (2007-01-23),

15. 7162042 - Modulator processing for a parametric speaker system (2007-01-09),

American Technology Corporation (ATC) is a leading technology solutions provider based in the United States. With a focus on innovation and customer satisfaction, ATC offers a wide range of cutting-edge products and services in various industries, including telecommunications, software development, and cybersecurity. Through its dedicated team of experts, ATC ensures the delivery of reliable and efficient solutions to meet the ever-evolving needs of its clients. Visit our website to learn more about our comprehensive range of technology-based solutions and how we can help your business thrive in the digital age.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 22 2026

American Technology Corporation

75 Patents

#82 in San Diego, CA

#1,152 in California

#4,899 in US

#9,993 in the World

San Diego, CA, United States of America

American Technology Corporation

Forward Citations = 2,502

29 inventors:

James J Croft, Iii (33 out of 43 patents)

Elwood Grant Norris (28 out of 106 patents)

Michael J Patrikios (10 out of 10 patents)

4. Joseph O Norris (7 out of 7 patents)

5. Michael E Spencer (6 out of 6 patents)

Please report any incorrect information to [email protected]

Loading…