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Austin, TX, United States of America

Crystal Semiconductor Corporation

USPTO Granted Patents = 104

Trademarks = 2

Forward Citations = 3,220

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75 inventors (with patents filed for the assignee):

Eric J Swanson (23 out of 68 patents)

Donald A Kerth (19 out of 73 patents)

Navdeep S Sooch (14 out of 76 patents)

4. Baker P Scott, Iii (10 out of 10 patents)

5. Jeffrey William Scott (7 out of 179 patents)

6. Michael James Callahan, Jr (6 out of 25 patents)

7. Ka Yin Leung (6 out of 76 patents)

8. Bruce Philip Del Signore (6 out of 26 patents)

9. Charles D Thompson (5 out of 19 patents)

10. Dan Bernard Kasha (5 out of 56 patents)

11. Nariankadu Datatreya Hemkumar (5 out of 24 patents)

12. Michael Vayden Jenkins (5 out of 15 patents)

13. David R Welland (4 out of 135 patents)

14. Shawn R McCaslin (4 out of 10 patents)

15. Christopher A Ludden (4 out of 12 patents)

Core Competencies:

Audio Circuits

Digital Audio

Speakerphone Circuit

Adaptive Filters

Signal Processing

Delta Sigma Modulator

Analog-to-Digital Converter

Tone Signal Generator

Volume Control

FIR Filter

Noise Reduction

Amplifiers

104 patents: Sort by Forward Citations

1. 6952621 - Single-chip audio circuits, methods, and systems using the same (2005-10-04),

2. 6356872 - Method and apparatus for storing digital audio and playback thereof (2002-03-12),

3. 6212273 - Full-duplex speakerphone circuit including a control interface (2001-04-03),

4. 6121811 - Variable time delay circuit and method (2000-09-19),

5. 6096960 - Period forcing filter for preprocessing sound samples for usage in a (2000-08-01),

6. 6091824 - Reduced-memory early reflection and reverberation simulator and method (2000-07-18),

7. 6088461 - Dynamic volume control system (2000-07-11),

8. 6088445 - Adaptive filter system having mixed fixed point or floating point and (2000-07-11),

9. 6052152 - Digital carrier synthesis by counting cycles for synchronization to a (2000-04-18),

10. 5978825 - Zero detection circuitry and methods (1999-11-02),

11. 5960401 - Method for exponent processing in an audio decoding system (1999-09-28),

12. 5923273 - Reduced power FIR filter (1999-07-13),

13. 5917917 - Reduced-memory reverberation simulator in a sound synthesizer (1999-06-29),

14. 5886658 - Serial port interface system and method for an analog-to-digital (1999-03-23),

15. 5825244 - Low power class AB integrated circuit amplifier having improved (1998-10-20),

Company Overview

Crystal Semiconductor Corporation, based in Austin, TX, specializes in audio processing technologies. The company develops advanced audio circuits and systems, focusing on applications such as digital audio, speakerphone circuits, and adaptive filters. Their expertise extends to signal processing, delta sigma modulators, analog-to-digital converters, and tone signal generators. With a commitment to innovation, Crystal Semiconductor plays a significant role in enhancing audio performance across various consumer and professional applications.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

104 Patents

#28 in Austin, TX

#203 in Texas

#3,657 in US

#7,516 in the World

Austin, TX, United States of America

Crystal Semiconductor Corporation

Forward Citations = 3,220

75 inventors:

Eric J Swanson (23 out of 68 patents)

Donald A Kerth (19 out of 73 patents)

Navdeep S Sooch (14 out of 76 patents)

4. Baker P Scott, Iii (10 out of 10 patents)

5. Jeffrey William Scott (7 out of 179 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Crystal Semiconductor Corporation. Retrieved from https://idiyas.com/company/crystal-semiconductor

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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