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Edinburgh, United Kingdom

Cirrus Logic International Semiconductor Limited

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USPTO Granted Patents = 40

% Expired Patents = 17.5

EPO Patents = 58

Forward Citations = 271

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58 inventors (with patents filed for the assignee):

John Paul Lesso (11 out of 317 patents)

Pär Gunnars Risberg (4 out of 17 patents)

John Laurence Pennock (3 out of 66 patents)

4. Emmanuel Philippe Christian Hardy (3 out of 11 patents)

5. Carlos Vaquero Aviles-Casco (3 out of 4 patents)

6. Marta Garcia Gomar (3 out of 13 patents)

7. Luis Buera Rodriguez (3 out of 7 patents)

8. Peter John Frith (2 out of 36 patents)

9. Robert James Hatfield (2 out of 13 patents)

10. James Thomas Deas (2 out of 18 patents)

11. Landy Aaron Toth (2 out of 104 patents)

12. Narayan Kovvali (2 out of 6 patents)

13. Toru Ido (2 out of 42 patents)

14. Marcus Arvidsson (2 out of 3 patents)

15. Daniel Stahre (2 out of 3 patents)

Core Competencies:

Acoustic Signal Processing

MEMS Capacitive Transducers

Speaker Recognition

Noise Cancellation

Digital/Analogue Conversion

Amplifier Circuit

Echo Control

Power Conversion Units

Voice Command

Wind Noise Reduction

Tamper-Resistant Element

Bass Enhancement

40 patents: Sort by Forward Citations

1. 11863948 - Sound components relationship classification and responsive signal processing in an acoustic signal processing system (2024-01-02),

2. 10819238 - Power system having multiple power conversion units with handoff of power regulation control (2020-10-27),

3. 10733276 - Multi-microphone human talker detection (2020-08-04),

4. 10559317 - Microphone array processing for adaptive echo control (2020-02-11),

5. 10056084 - Tamper-resistant element for use in speaker recognition (2018-08-21),

6. 9900690 - Control and protection of loudspeakers (2018-02-20),

7. 9788103 - Speaker system which comprises speaker driver groups (2017-10-10),

8. 9779726 - Voice command triggered speech enhancement (2017-10-03),

9. 9767806 - Anti-spoofing (2017-09-19),

10. 9749749 - Audio enhancement (2017-08-29),

11. 9748971 - Analogue-to-digital converter (2017-08-29),

12. 9729969 - System and method for bass enhancement (2017-08-08),

13. 9729114 - Low noise amplifier for MEMS capacitive transducers (2017-08-08),

14. 9716945 - Signal processing for MEMS capacitive transducers (2017-07-25),

15. 9695038 - MEMS devices with membrane having venting flaps hingedly attached to one another (2017-07-04),

Company Overview

Cirrus Logic International Semiconductor Limited, based in Edinburgh, specializes in advanced audio and signal processing technologies. The company focuses on developing innovative solutions in acoustic signal processing, power conversion, and audio enhancement. Its expertise encompasses human talker detection, echo control, and speaker recognition, catering to a diverse range of applications. Additionally, Cirrus Logic is known for its work with MEMS capacitive transducers and Class D amplifiers, positioning itself as a leader in the semiconductor industry.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

40 Patents

#6 in Edinburgh

#443 in United Kingdom

#17,098 in the World

Edinburgh, United Kingdom

Cirrus Logic International Semiconductor Limited

Forward Citations = 271

58 inventors:

John Paul Lesso (11 out of 317 patents)

Pär Gunnars Risberg (4 out of 17 patents)

John Laurence Pennock (3 out of 66 patents)

4. Emmanuel Philippe Christian Hardy (3 out of 11 patents)

5. Carlos Vaquero Aviles-Casco (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Cirrus Logic International Semiconductor Limited. Retrieved from https://idiyas.com/company/cirrus-logic-international-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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