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Kwang-Hwa Liu
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Sunnyvale, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Control device for multiphase interleaved DC-DC converter and contr...
Patent number
9,190,909
Issue date
Nov 17, 2015
NATIONAL TAIWAN UNIVERSITY
Yaow-Ming Chen
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Dimmable LED lamp and dimmable LED lighting apparatus
Patent number
8,294,379
Issue date
Oct 23, 2012
Green Mark Technology Inc.
Kwang-Hwa Liu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
LED driver circuit
Patent number
8,247,992
Issue date
Aug 21, 2012
Green Mark Technology Inc.
Kwang-Hwa Liu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Buck converter LED driver circuit
Patent number
7,750,616
Issue date
Jul 6, 2010
Green Mark Technology Inc.
Kwang-Hwa Liu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Circuit and method for controlling the rotating speed of a BLDC motor
Patent number
7,443,119
Issue date
Oct 28, 2008
Green Mark Technology Inc.
Kwang-Hwa Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Circuit and method for controlling the power mode a class-D amplifier
Patent number
7,427,893
Issue date
Sep 23, 2008
Kwang-Hwa Liu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Filterless class D power amplifier
Patent number
7,332,962
Issue date
Feb 19, 2008
Amazion Electronics, Inc.
Kuo-Hung Wu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Active power factor correction circuit and control method thereof
Patent number
7,295,452
Issue date
Nov 13, 2007
Green Mark Technology Inc.
Kwang-Hwa Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Speed control of brushless DC motors
Patent number
7,259,531
Issue date
Aug 21, 2007
Kwang-Hwa Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power adapter interface circuitry for protecting a battery operated...
Patent number
7,106,566
Issue date
Sep 12, 2006
Arques Technology
Kwang H. Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Biasing system and method for low voltage DC—DC converters with bui...
Patent number
6,903,535
Issue date
Jun 7, 2005
Arques Technology, Inc.
Kwang H. Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Charger system with dual-level current regulation and dual-level th...
Patent number
6,861,824
Issue date
Mar 1, 2005
Arquesttechnology, Inc.
Kwang H. Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Boost-buck cascade converter for pulsating loads
Patent number
6,798,177
Issue date
Sep 28, 2004
Arques Technology, Inc.
Kwang H. Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Bidirectional voltage regulator sourcing and sinking current for li...
Patent number
6,707,280
Issue date
Mar 16, 2004
Arques Technology, Inc.
Kwang H. Liu
G05 - CONTROLLING REGULATING
Information
Patent Grant
Self-clocking multiphase power supply controller
Patent number
6,495,995
Issue date
Dec 17, 2002
Semtech Corporation
Terry J. Groom
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Dual-channel power system with an eight-pin PWM control chip
Patent number
5,999,421
Issue date
Dec 7, 1999
Kwang H. Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Smart battery selector offering power conversion internally within...
Patent number
5,903,764
Issue date
May 11, 1999
Micro International, Ltd.
You-Yuh Shyr
G01 - MEASURING TESTING
Information
Patent Grant
Circuit for energizing cold-cathode fluorescent lamps
Patent number
5,892,336
Issue date
Apr 6, 1999
Yung Lin
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Higher-efficiency cold-cathode fluorescent lamp power supply
Patent number
5,619,402
Issue date
Apr 8, 1997
O.sub.2 Micro, Inc.
Kwang H. Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Patents Applications
last 30 patents
Information
Patent Application
CONTROL DEVICE FOR MULTIPHASE INTERLEAVED DC-DC CONVERTER AND CONTR...
Publication number
20140334196
Publication date
Nov 13, 2014
National Taiwan University
YAOW-MING CHEN
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
LED DRIVER CIRCUIT
Publication number
20110234110
Publication date
Sep 29, 2011
GREEN MARK TECHNOLOGY INC.
Kwang-Hwa Liu
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
DIMMABLE LED LAMP AND DIMMABLE LED LIGHTING APPARATUS
Publication number
20110109249
Publication date
May 12, 2011
GREEN MARK TECHNOLOGY INC.
Kwang-Hwa Liu
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
SYNCHRONOUS RECTIFIER DC/DC CONVERTERS USING A CONTROLLED-COUPLING...
Publication number
20090257250
Publication date
Oct 15, 2009
GREEN MARK TECHNOLOGY INC.
Kwang-Hwa Liu
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
BUCK CONVERTER LED DRIVER CIRCUIT
Publication number
20080316781
Publication date
Dec 25, 2008
GREEN MARK TECHNOLOGY INC.
Kwang-Hwa Liu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
CIRCUIT AND METHOD FOR CONTROLLING THE ROTATING SPEED OF A BLDC MOTOR
Publication number
20080219648
Publication date
Sep 11, 2008
GREEN MARK TECHNOLOGY INC.
Kwang-Hwa Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
USB HUB WITH A USB POWERED SPEAKER
Publication number
20080008337
Publication date
Jan 10, 2008
Kwang-Hwa Liu
G06 - COMPUTING CALCULATING COUNTING
Information
Patent Application
CIRCUIT AND METHOD FOR CONTROLLING THE POWER MODE A CLASS-D AMPLIFIER
Publication number
20070290743
Publication date
Dec 20, 2007
Kwang-Hwa Liu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
MULTIPLE-OUTPUT DC-DC CONVERTER
Publication number
20070262760
Publication date
Nov 15, 2007
Kwang-Hwa Liu
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Photo-flash driving circuit
Publication number
20070223907
Publication date
Sep 27, 2007
Kwang-Hwa Liu
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Application
Filterless class D power amplifier
Publication number
20070146069
Publication date
Jun 28, 2007
Kuo-Hung Wu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Direct mode pulse width modulation for DC to DC converters
Publication number
20070063681
Publication date
Mar 22, 2007
AMAZION ELECTRONICS, INC.
Kwang-Hwa Liu
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Power adapter interface circuitry for protecting a battery operated...
Publication number
20050007711
Publication date
Jan 13, 2005
Arques Technology
Kwang H. Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Biasing system and method for low voltage DC-DC converters with bui...
Publication number
20030193364
Publication date
Oct 16, 2003
Kwang H. Liu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Self-clocking multiphase power supply controller
Publication number
20020125869
Publication date
Sep 12, 2002
Terry J. Groom
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...