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Daniel Keyes Butterfield
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Encinitas, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Timing synchronization of LIDAR system to reduce interference
Patent number
10,338,201
Issue date
Jul 2, 2019
QUALCOMM Incorporated
Volodimir Slobodyanyuk
G01 - MEASURING TESTING
Information
Patent Grant
Serial link adaptive equalization using track and hold circuits
Patent number
10,250,417
Issue date
Apr 2, 2019
QUALCOMM Incorporated
Bo Sun
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switched capacitor transmitter circuits and methods
Patent number
9,531,409
Issue date
Dec 27, 2016
QUALCOMM Incorporated
Daniel Keyes Butterfield
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switched capacitor transmitter circuits and methods
Patent number
9,520,906
Issue date
Dec 13, 2016
Daniel Keyes Butterfield
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switching power amplifier for quantized signals
Patent number
8,493,145
Issue date
Jul 23, 2013
QUALCOMM Incorporated
Harinath Garudadri
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Switching power amplifier for quantized signals
Patent number
7,969,242
Issue date
Jun 28, 2011
QUALCOMM Incorporated
Harinath Garudadri
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Hardware-efficient transceiver with delta-sigma digital-to-analog c...
Patent number
6,321,075
Issue date
Nov 20, 2001
QUALCOMM Incorporated
Daniel Keyes Butterfield
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Method and apparatus for eliminating clock jitter in continuous-tim...
Patent number
6,184,812
Issue date
Feb 6, 2001
QUALCOMM Incorporated
Saed G. Younis
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Receiver with sigma-delta analog-to-digital converter for sampling...
Patent number
6,005,506
Issue date
Dec 21, 1999
Qualcomm, Incorporated
Seyfollah S. Bazarjani
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Current carrier tractor-trailer data link
Patent number
5,142,278
Issue date
Aug 25, 1992
QUALCOMM Incorporated
Kamran Moallemi
G08 - SIGNALLING
Patents Applications
last 30 patents
Information
Patent Application
WIRELESS GUIDEWIRE
Publication number
20190247618
Publication date
Aug 15, 2019
QUALCOMM Incorporated
Stephen Jay SHELLHAMMER
A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information
Patent Application
NEURAL SIGNAL DATA CAPTURE
Publication number
20190053725
Publication date
Feb 21, 2019
QUALCOMM Incorporated
William Henry Von Novak
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
TIMING SYNCHRONIZATION OF LIDAR SYSTEM TO REDUCE INTERFERENCE
Publication number
20170082737
Publication date
Mar 23, 2017
QUALCOMM Incorporated
Volodimir SLOBODYANYUK
G01 - MEASURING TESTING
Information
Patent Application
SWITCHED CAPACITOR TRANSMITTER CIRCUITS AND METHODS
Publication number
20150381401
Publication date
Dec 31, 2015
QUALCOMM Incorporated
Daniel Keyes Butterfield
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SWITCHED CAPACITOR TRANSMITTER CIRCUITS AND METHODS
Publication number
20150381215
Publication date
Dec 31, 2015
QUALCOMM Incorporated
Daniel Keyes Butterfield
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
RFDAC Transmitter Using Multiphase Image Select FIR DAC and Delta S...
Publication number
20150085902
Publication date
Mar 26, 2015
QUALCOMM Incorporated
Daniel Keyes Butterfield
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SWITCHING POWER AMPLIFIER FOR QUANTIZED SIGNALS
Publication number
20110222703
Publication date
Sep 15, 2011
QUALCOMM Incorporated
Harinath Garudadri
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
SWITCHING POWER AMPLIFIER FOR QUANTIZED SIGNALS
Publication number
20100019845
Publication date
Jan 28, 2010
QUALCOMM Incorporated
Harinath Garudadri
H03 - BASIC ELECTRONIC CIRCUITRY