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San Diego, CA, United States of America

American Technology Corporation

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USPTO Granted Patents = 75

% Expired Patents = 16.0

Trademarks = 6

Forward Citations = 2,506

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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),

Company Overview

American Technology Corporation, based in San Diego, CA, specializes in parametric audio technologies that redefine sound delivery. The company is known for its innovative developments in parametric loudspeakers and ultrasonic emitters, which enable precise audio targeting and enhanced acoustic performance. Their expertise extends to various acoustic devices, including electrostatic and planar-magnetic speakers, focusing on dynamic power sharing and audio feedback mechanisms. This positions the company at the forefront of advanced audio solutions, catering to diverse applications across multiple industries.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

75 Patents

#84 in San Diego, CA

#1,157 in California

#4,918 in US

#10,020 in the World

San Diego, CA, United States of America

American Technology Corporation

Forward Citations = 2,506

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)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: American Technology Corporation. Retrieved from https://idiyas.com/company/american-technology

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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