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Hangzhou, CN
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Patents Grants
last 30 patents
Information
Patent Grant
Illumination device, LED driver circuit, bleeder control circuit an...
Patent number
11,895,747
Issue date
Feb 6, 2024
JOULWATT TECHNOLOGY CO., LTD.
Wanyue He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Leakage protection circuit and dimming drive circuit
Patent number
11,895,751
Issue date
Feb 6, 2024
JOULWATT TECHNOLOGY CO., LTD.
Wanyue He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Buffer circuit for light emitting diode (LED) drive circuit, and LE...
Patent number
11,805,581
Issue date
Oct 31, 2023
JOULWATT TECHNOLOGY CO., LTD.
Wanyue He
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Control method of switching circuit, control circuit of switching c...
Patent number
11,563,381
Issue date
Jan 24, 2023
Joulwatt Technology (Hangzhou) Co. LTD.
Minghao Wu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Protection circuit and illumination driving circuit
Patent number
10,506,684
Issue date
Dec 10, 2019
JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
Junming Zhang
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Dimming circuit, dimming method and LED driving circuit
Patent number
10,327,296
Issue date
Jun 18, 2019
JOULWATT TECHNOLOGY (HANGZHOU)CO., LTD.
Guoqiang Liu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Bleeder circuit
Patent number
10,153,684
Issue date
Dec 11, 2018
Joulwatt Technology (Hangzhou) Co., Ltd.
Guoqiang Liu
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Bleeder circuit and control method thereof, and LED control circuit
Patent number
10,143,051
Issue date
Nov 27, 2018
JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
Guoqiang Liu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
Information
Patent Application
POWER SUPPLY CIRCUIT AND LIGHT-EMITTING DIODE (LED) DRIVING SYSTEM...
Publication number
20230344341
Publication date
Oct 26, 2023
Joulwatt Technology Co., Ltd.
Guoqiang LIU
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
ILLUMINATION DEVICE, LED DRIVER CIRCUIT, BLEEDER CONTROL CIRCUIT AN...
Publication number
20230137757
Publication date
May 4, 2023
Joulwatt Technology Co., Ltd.
Wanyue HE
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
FLYBACK CONVERTER, CONSTANT-CURRENT CONTROL METHOD, AND LIGHTING SY...
Publication number
20230129443
Publication date
Apr 27, 2023
Joulwatt Technology Co., Ltd.
Guoqiang LIU
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
BUFFER CIRCUIT FOR LIGHT EMITTING DIODE (LED) DRIVE CIRCUIT, AND LE...
Publication number
20230098482
Publication date
Mar 30, 2023
Joulwatt Technology Co., Ltd.
Wanyue HE
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
LEAKAGE PROTECTION CIRCUIT AND DIMMING DRIVE CIRCUIT
Publication number
20230090441
Publication date
Mar 23, 2023
Joulwatt Technology Co., Ltd.
Wanyue HE
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
CONTROL METHOD OF SWITCHING CIRCUIT, CONTROL CIRCUIT OF SWITCHING C...
Publication number
20210194373
Publication date
Jun 24, 2021
JOULWATT TECHNOLOGY (HANGZHOU) CO. LTD.
Minghao WU
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
PROTECTION CIRCUIT AND ILLUMINATION DRIVING CIRCUIT
Publication number
20180241195
Publication date
Aug 23, 2018
JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
Junming ZHANG
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Dimming Circuit, Dimming Method and LED Driving Circuit
Publication number
20180192491
Publication date
Jul 5, 2018
Chipone Technology (Beijing) Co., Ltd.
Guoqiang Liu
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
BLEEDER CIRCUIT AND CONTROL METHOD THEREOF, AND LED CONTROL CIRCUIT
Publication number
20180139816
Publication date
May 17, 2018
JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
Guoqiang LIU
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Application
BLEEDER CIRCUIT
Publication number
20180115234
Publication date
Apr 26, 2018
JOULWATT TECHNOLOGY (HANGZHOU) CO., LTD.
Guoqiang LIU
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER