ADC TECH INTERNATIONAL LTD.

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Kowloon, HK

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Patents Grantslast 30 patents

Information Patent Grant
System and method for electret surface potential restoration by a d...
- Patent number 10,522,295
- Issue date Dec 31, 2019
- ADC TECH INTERNATIONAL LTD.
- William S. H. Cheung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Air purifier having an electret module
- Patent number 9,913,998
- Issue date Mar 13, 2018
- ADC Tech International Ltd.
- William S. H. Cheung
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
System and method for electret surface potential restoration by a d...
- Patent number 9,842,701
- Issue date Dec 12, 2017
- ADC Tech International Ltd.
- William S. H. Cheung
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Planar electrodes and a method of controlling spacing between elect...
- Patent number 9,230,736
- Issue date Jan 5, 2016
- ADC Tech International Ltd.
- William S. H. Cheung
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Multi-layer capacitor
- Patent number 7,813,105
- Issue date Oct 12, 2010
- ADC Tech International Ltd.
- William S. Cheung
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

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Patents Applicationslast 30 patents

Information Patent Application
AIR PURIFIER HAVING AN ELECTRET MODULE
- Publication number 20180193678
- Publication date Jul 12, 2018
- ADC TECH INTERNATIONAL LTD.
- William S.H. Cheung
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Application
SYSTEM AND METHOD FOR ELECTRET SURFACE POTENTIAL RESTORATION BY A D...
- Publication number 20180102221
- Publication date Apr 12, 2018
- ADC Tech International Ltd.
- William S.H. CHEUNG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYSTEM AND METHOD FOR ELECTRET SURFACE POTENTIAL RESTORATION BY A D...
- Publication number 20150022028
- Publication date Jan 22, 2015
- ADC Tech International Ltd.
- William S.H. CHEUNG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
AIR PURIFIER HAVING AN ELECTRET MODULE
- Publication number 20140150797
- Publication date Jun 5, 2014
- ADC TECH INTERNATIONAL LTD.
- William S.H. Cheung
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...