WANG-CHANG DUAN

Person

Shenzhen City, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Keyboard with rotation detection module and pivotable supporting me...
- Patent number 8,376,638
- Issue date Feb 19, 2013
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- Lung Dai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Battery system and protection apparatus thereof
- Patent number 8,373,392
- Issue date Feb 12, 2013
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- Lung Dai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Media player system, media player, and earphone
- Patent number 8,243,977
- Issue date Aug 14, 2012
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Lung Dai
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Audio reproducing apparatus
- Patent number 8,103,021
- Issue date Jan 24, 2012
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Lung Dai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Audio and video apparatus and method for controlling the same
- Patent number 8,086,095
- Issue date Dec 27, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Chun-Lung Hung
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and system for saving images from web pages
- Patent number 8,082,513
- Issue date Dec 20, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Lung Dai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Electronic device and power supply unit thereof
- Patent number 8,072,784
- Issue date Dec 6, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Chun-Lung Hung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electronic device and signal generator thereof
- Patent number 8,058,912
- Issue date Nov 15, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Lung Dai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electronic device and delay circuit thereof
- Patent number 8,022,737
- Issue date Sep 20, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Lung Dai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Air conditioning system, method of operation thereof, and vehicle u...
- Patent number 7,997,090
- Issue date Aug 16, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Lung Dai
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electronic device and charging control circuit
- Patent number 7,990,107
- Issue date Aug 2, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Lung Dai
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power interface circuit and electronic device using the same
- Patent number 7,916,440
- Issue date Mar 29, 2011
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Chun-Lung Hung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply system and protection method
- Patent number 7,804,195
- Issue date Sep 28, 2010
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Chun-Lung Hung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Audio amplifier
- Patent number 7,663,433
- Issue date Feb 16, 2010
- Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd.
- Chun-Lung Hung
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
COMMUNICATING DEVICE AND COMMUNICATING METHOD
- Publication number 20100245101
- Publication date Sep 30, 2010
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- WANG-CHANG DUAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
COMMUNICATION METHOD AND DEVICE AND TELEVISION EMPLOYING THE SAME
- Publication number 20100231793
- Publication date Sep 16, 2010
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- LUNG DAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ELECTRONIC DEVICE AND DELAY CIRCUIT THEREOF
- Publication number 20100176861
- Publication date Jul 15, 2010
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- LUNG DAI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
KEYBOARD
- Publication number 20100165559
- Publication date Jul 1, 2010
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO.,LTD.
- LUNG DAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ELECTRONIC DEVICE AND SIGNAL GENERATOR THEREOF
- Publication number 20100156478
- Publication date Jun 24, 2010
- HONG FU JIN PRECISION INDUSTRY (ShenZhen)CO., LTD.
- Lung Dai
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
NAVIGATION DEVICE AND METHOD
- Publication number 20100145612
- Publication date Jun 10, 2010
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- WANG-CHANG DUAN
- G01 - MEASURING TESTING
Information Patent Application
BATTERY SYSTEM AND PROTECTION APPARATUS THEREOF
- Publication number 20100141216
- Publication date Jun 10, 2010
- HONG FU JIN PRICISION INDUSTRY (ShenZhen) CO., LTD.
- LUNG DAI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
AUDIO REPRODUCING APPARATUS
- Publication number 20090285411
- Publication date Nov 19, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO.,LTD.
- LUNG DAI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
LIGHT SHADE FOR DISPLAY PANEL
- Publication number 20090268300
- Publication date Oct 29, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- Lung Dai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ELECTRONIC DEVICE
- Publication number 20090267563
- Publication date Oct 29, 2009
- HONG FU JIN PRECISION (ShenZhen) CO., LTD.
- LUNG DAI
- G11 - INFORMATION STORAGE
Information Patent Application
APPARATUS AND METHOD FOR MANAGING NETWORK STORAGE
- Publication number 20090265391
- Publication date Oct 22, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- LUNG DAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
MEDIA PLAYER SYSTEM, MEDIA PLAYER, AND EARPHONE
- Publication number 20090245550
- Publication date Oct 1, 2009
- HON FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- LUNG DAI
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
METHOD OF SORTING WEB PAGES, SEARCH TERMINAL AND CLIENT TERMINAL
- Publication number 20090248673
- Publication date Oct 1, 2009
- HONG FU JIN PRECISION INDUSTRY CO., LTD.
- LUNG DAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MEDIA PLAYER AND AUDIO PROCESSING METHOD THEREOF
- Publication number 20090240360
- Publication date Sep 24, 2009
- HON FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- LUNG DAI
- G11 - INFORMATION STORAGE
Information Patent Application
SYSTEM AND METHOD FOR PASSWORD ENTRY
- Publication number 20090235197
- Publication date Sep 17, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- WEN-MING CHEN
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
METHOD AND SYSTEM FOR SAVING IMAGES FROM WEB PAGES
- Publication number 20090228480
- Publication date Sep 10, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- LUNG DAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
PORTABLE ELECTRONIC DEVICE AND RECOVERY METHOD THEREFOR
- Publication number 20090219130
- Publication date Sep 3, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- Lung Dai
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Application
COMPUTER SYSTEM, DISPLAY CONTROL METHOD AND DISPLAY CONTROLLER
- Publication number 20090213075
- Publication date Aug 27, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen)CO., LTD.
- LUNG DAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
MULTIPLE USER COMPUTER SYSTEM AND METHOD FOR MODIFYING DISPLAY PARA...
- Publication number 20090216706
- Publication date Aug 27, 2009
- HONG FU JIN PRECISION INDUSTRY(SHENZHEN) CO., LTD.
- LUNG DAI
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
AIR CONDITIONING SYSTEM, METHOD OF OPERATION THEREOF, AND VEHICLE U...
- Publication number 20090188267
- Publication date Jul 30, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- Lung Dai
- B60 - VEHICLES IN GENERAL
Information Patent Application
MEDIA PLAYER SYSTEM, MEDIA PLAYER, EARPHONE, AND METHOD THEREOF
- Publication number 20090180639
- Publication date Jul 16, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- LUNG DAI
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
ELECTRONIC DEVICE AND CHARGING CONTROL CIRCUIT
- Publication number 20090167250
- Publication date Jul 2, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- LUNG DAI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
ELECTRONIC DEVICE AND METHOD FOR CONTROLLING SCREEN SAVER OPERATION...
- Publication number 20090172607
- Publication date Jul 2, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- LUNG DAI
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
LASER CONTROL APPARATUS AND ELECTRONIC DEVICE USING THE SAME
- Publication number 20090168822
- Publication date Jul 2, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- CHUN-LUNG HUNG
- G11 - INFORMATION STORAGE
Information Patent Application
ELECTRONIC DEVICE AND POWER SUPPLY UNIT THEREOF
- Publication number 20090161394
- Publication date Jun 25, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- CHUN-LUNG HUNG
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
AUDIO AND VIDEO APPARATUS AND METHOD FOR CONTROLLING THE SAME
- Publication number 20090154900
- Publication date Jun 18, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- CHUN-LUNG HUNG
- G11 - INFORMATION STORAGE
Information Patent Application
POWER INTERFACE CIRCUIT AND ELECTRONIC DEVICE USING THE SAME
- Publication number 20090147419
- Publication date Jun 11, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD.
- CHUN-LUNG HUNG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ELECTRONIC DEVICE
- Publication number 20090134934
- Publication date May 28, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- Chun-Lung Hung
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
POWER SUPPLY SYSTEM AND PROTECTION METHOD
- Publication number 20090127935
- Publication date May 21, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- CHUN-LUNG HUNG
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
AUDIO AMPLIFIER
- Publication number 20090115511
- Publication date May 7, 2009
- HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD
- CHUN-LUNG HUNG
- H03 - BASIC ELECTRONIC CIRCUITRY

WANG-CHANG DUAN

Person

Patents Grantslast 30 patents

Keyboard with rotation detection module and pivotable supporting me...

Battery system and protection apparatus thereof

Media player system, media player, and earphone

Audio reproducing apparatus

Audio and video apparatus and method for controlling the same

Method and system for saving images from web pages

Electronic device and power supply unit thereof

Electronic device and signal generator thereof

Electronic device and delay circuit thereof

Air conditioning system, method of operation thereof, and vehicle u...

Electronic device and charging control circuit

Power interface circuit and electronic device using the same

Power supply system and protection method

Audio amplifier

Patents Applicationslast 30 patents

COMMUNICATING DEVICE AND COMMUNICATING METHOD

COMMUNICATION METHOD AND DEVICE AND TELEVISION EMPLOYING THE SAME

ELECTRONIC DEVICE AND DELAY CIRCUIT THEREOF

KEYBOARD

ELECTRONIC DEVICE AND SIGNAL GENERATOR THEREOF

NAVIGATION DEVICE AND METHOD

BATTERY SYSTEM AND PROTECTION APPARATUS THEREOF

AUDIO REPRODUCING APPARATUS

LIGHT SHADE FOR DISPLAY PANEL

ELECTRONIC DEVICE

APPARATUS AND METHOD FOR MANAGING NETWORK STORAGE

MEDIA PLAYER SYSTEM, MEDIA PLAYER, AND EARPHONE

METHOD OF SORTING WEB PAGES, SEARCH TERMINAL AND CLIENT TERMINAL

MEDIA PLAYER AND AUDIO PROCESSING METHOD THEREOF

SYSTEM AND METHOD FOR PASSWORD ENTRY

METHOD AND SYSTEM FOR SAVING IMAGES FROM WEB PAGES

PORTABLE ELECTRONIC DEVICE AND RECOVERY METHOD THEREFOR

COMPUTER SYSTEM, DISPLAY CONTROL METHOD AND DISPLAY CONTROLLER

MULTIPLE USER COMPUTER SYSTEM AND METHOD FOR MODIFYING DISPLAY PARA...

AIR CONDITIONING SYSTEM, METHOD OF OPERATION THEREOF, AND VEHICLE U...

MEDIA PLAYER SYSTEM, MEDIA PLAYER, EARPHONE, AND METHOD THEREOF

ELECTRONIC DEVICE AND CHARGING CONTROL CIRCUIT

ELECTRONIC DEVICE AND METHOD FOR CONTROLLING SCREEN SAVER OPERATION...

LASER CONTROL APPARATUS AND ELECTRONIC DEVICE USING THE SAME

ELECTRONIC DEVICE AND POWER SUPPLY UNIT THEREOF

AUDIO AND VIDEO APPARATUS AND METHOD FOR CONTROLLING THE SAME

POWER INTERFACE CIRCUIT AND ELECTRONIC DEVICE USING THE SAME

ELECTRONIC DEVICE

POWER SUPPLY SYSTEM AND PROTECTION METHOD

AUDIO AMPLIFIER