Douglas James Wallace MacFarlane

Person

Edinburgh, GB

People

Patents Grantslast 30 patents

Information Patent Grant
Chip scale package
- Patent number 11,887,924
- Issue date Jan 30, 2024
- Cirrus Logic Inc.
- Craig McAdam
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Chip scale package
- Patent number 11,562,952
- Issue date Jan 24, 2023
- Cirrus Logic, Inc.
- Craig McAdam
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Microphone biasing circuitry and method thereof
- Patent number 9,872,103
- Issue date Jan 16, 2018
- Cirrus Logic, Inc.
- Andrew James Howlett
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Microphone biasing circuitry and method thereof
- Patent number 9,661,434
- Issue date May 23, 2017
- Cirrus Logic, Inc.
- Andrew James Howlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Microphone biasing circuitry and method thereof
- Patent number 9,490,765
- Issue date Nov 8, 2016
- Cirrus Logic, Inc.
- Andrew James Howlett
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
DC-DC converters operable in a discontinuous switching mode
- Patent number 9,300,212
- Issue date Mar 29, 2016
- Cirrus Logic International Semiconductor Ltd.
- Andrew Notman
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Microphone biasing circuitry and method thereof
- Patent number 9,148,722
- Issue date Sep 29, 2015
- Cirrus Logic International Semiconductor Ltd.
- Andrew James Howlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus and method for biasing a transducer
- Patent number 8,699,726
- Issue date Apr 15, 2014
- Wolfson Microelectronics plc
- Colin Findlay Steele
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
DC-DC converters operable in a discontinuous switching mode
- Patent number 8,541,993
- Issue date Sep 24, 2013
- Wolfson Microelectronics plc
- Andrew Notman
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Charge pump circuit and methods of operation thereof
- Patent number 8,508,288
- Issue date Aug 13, 2013
- Wolfson Microelectronics plc
- Douglas James Wallace MacFarlane
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
SWITCHING TRANSDUCER DRIVER
- Publication number 20240364328
- Publication date Oct 31, 2024
- Cirrus Logic International Semiconductor Ltd.
- John P. LESSO
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CONTROL OF INDUCTOR SWITCHING
- Publication number 20240048128
- Publication date Feb 8, 2024
- Cirrus Logic International Semiconductor Ltd.
- Vikas VIJAY
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CHIP SCALE PACKAGE
- Publication number 20230088252
- Publication date Mar 23, 2023
- Cirrus Logic International Semiconductor Ltd.
- Craig MCADAM
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CHIP SCALE PACKAGE
- Publication number 20220246514
- Publication date Aug 4, 2022
- Cirrus Logic International Semiconductor Ltd.
- Craig MCADAM
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF
- Publication number 20170245052
- Publication date Aug 24, 2017
- Cirrus Logic International Semiconductor Ltd.
- Andrew James Howlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF
- Publication number 20170078814
- Publication date Mar 16, 2017
- Cirrus Logic International Semiconductor Ltd.
- Andrew James Howlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF
- Publication number 20160056786
- Publication date Feb 25, 2016
- Cirrus Logic International Semiconductor Ltd.
- Andrew James Howlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF
- Publication number 20140307910
- Publication date Oct 16, 2014
- WOLFSON MICROELECTRONICS PLC
- Andrew James Howlett
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Douglas James Wallace MacFarlane

Person

Patents Grantslast 30 patents

Chip scale package

Chip scale package

Microphone biasing circuitry and method thereof

Microphone biasing circuitry and method thereof

Microphone biasing circuitry and method thereof

DC-DC converters operable in a discontinuous switching mode

Microphone biasing circuitry and method thereof

Apparatus and method for biasing a transducer

DC-DC converters operable in a discontinuous switching mode

Charge pump circuit and methods of operation thereof

Patents Applicationslast 30 patents

SWITCHING TRANSDUCER DRIVER

CONTROL OF INDUCTOR SWITCHING

CHIP SCALE PACKAGE

CHIP SCALE PACKAGE

MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF

MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF

MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF

MICROPHONE BIASING CIRCUITRY AND METHOD THEREOF