For the Inventor, By the Inventor

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Austin, TX, United States of America

Sigmatel, Inc.

Calculating rank

USPTO Granted Patents = 218

% Expired Patents = 33.9

Trademarks = 1

Forward Citations = 1,913

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97 inventors (with patents filed for the assignee):

Michael R May (33 out of 101 patents)

Marcus William May (30 out of 43 patents)

Matthew Derrell Felder (26 out of 45 patents)

4. Matthew Brady Henson (16 out of 23 patents)

5. Mathew A Rybicki (15 out of 91 patents)

6. Darrell Tinker (14 out of 21 patents)

7. Daniel Patrick Mulligan (14 out of 28 patents)

8. H Spence Jackson (13 out of 24 patents)

9. David Cureton Baker (12 out of 38 patents)

10. Russell Alvin Schultz (11 out of 13 patents)

11. Antonio Torrini (10 out of 32 patents)

12. Jeffrey Donald Alderson (10 out of 61 patents)

13. Shahriar Rokhsaz (7 out of 95 patents)

14. Erich Lowe (7 out of 7 patents)

15. Michael A Margules (6 out of 8 patents)

Core Competencies:

Digital Audio Processing

Power Management

Memory Control

Wireless Transceiver

Decimation Filter

Audio Signal Processing

Integrated Circuit

Touch Screen Driver

Non-Volatile Memory

Harmonic Distortion

Sample Rate Conversion

Handheld Audio System

218 patents: Sort by Forward Citations

1. 9547623 - Flexible memory interface system for independently processing different portions of an instruction (2017-01-17),

2. 9231562 - Decimation filter (2016-01-05),

3. 9172417 - Power management for a battery-powered handheld audio device (2015-10-27),

4. 9015375 - Buffer controller, codec and methods for use therewith (2015-04-21),

5. 8862253 - Gain control module and applications thereof (2014-10-14),

6. 8861749 - Audio output driver for reducing electromagnetic interference and improving audio channel performance (2014-10-14),

7. 8811929 - Power management for a battery-powered handheld audio device (2014-08-19),

8. 8639946 - System and method of using a protected non-volatile memory (2014-01-28),

9. 8639370 - Audio source system and method (2014-01-28),

10. 8635261 - Decimation filter (2014-01-21),

11. 8477248 - System and method of demodulating audio signals (2013-07-02),

12. 8379730 - Method for determining display order of VOPS in decoder end or MPEG image system and device for executing the same (2013-02-19),

13. 8189384 - System and method to control one time programmable memory (2012-05-29),

14. 8130871 - Integrated circuit having radio receiver and methods for use therewith (2012-03-06),

15. 8117354 - Automatically disabling input/output signal processing based on the required multimedia format (2012-02-14),

Company Overview

Sigmatel, Inc., based in Austin, TX, specializes in digital audio processing technologies. The company develops innovative solutions that enhance audio experiences across various devices, focusing on integrated circuits and audio signal processing. Their expertise extends to power management, memory control, and wireless transceivers, making them a key player in the audio technology sector. Sigmatel's commitment to advancing touch screen driver technology further solidifies its position in the digital audio landscape, catering to a diverse range of applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

218 Patents

#13 in Austin, TX

#113 in Texas

#1,928 in US

#3,929 in the World

Austin, TX, United States of America

Sigmatel, Inc.

Forward Citations = 1,913

97 inventors:

Michael R May (33 out of 101 patents)

Marcus William May (30 out of 43 patents)

Matthew Derrell Felder (26 out of 45 patents)

4. Matthew Brady Henson (16 out of 23 patents)

5. Mathew A Rybicki (15 out of 91 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Sigmatel, Inc.. Retrieved from https://idiyas.com/company/sigmatel

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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