WC

William S. H. Cheung

AI Adc Tech International: 5 patents #1 of 1Top 100%
PL Payview Limited: 4 patents #1 of 5Top 20%
Overall (All Time): #237,414 of 4,157,543Top 6%
19
Patents All Time

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #TitleCo-InventorsDate
10675489 Air purifier having an electret module 2020-06-09
10522295 System and method for electret surface potential restoration by a directional pulsating electric field 2019-12-31
10141124 Electronic component fabrication method using removable spacers 2018-11-27
9913998 Air purifier having an electret module 2018-03-13
9842701 System and method for electret surface potential restoration by a directional pulsating electric field 2017-12-12
9508490 Electronic component fabrication method using removable spacers 2016-11-29
9230736 Planar electrodes and a method of controlling spacing between electrodes 2016-01-05
8732925 Electronic component fabrication method using removable spacers 2014-05-27
8156622 Electronic component fabrication method using removable spacers 2012-04-17
7813105 Multi-layer capacitor 2010-10-12
7387928 Device and method for making air, gas or vacuum capacitors and other microwave components 2008-06-17
6775124 Micro-gap gas filled dielectric capacitor 2004-08-10
6476685 Network for providing group delay equalization for filter networks 2002-11-05
4620226 Apparatus for producing audio and visual signals for modulating a television system carrier signal 1986-10-28
4527195 Apparatus for encoding and decoding information 1985-07-02
4438752 Vehicle ignition system 1984-03-27
4430669 Transmitting and receiving apparatus for permitting the transmission and reception of multi-tier subscription programs 1984-02-07
4396947 Apparatus for encoding of information 1983-08-02
4329711 Apparatus for encoding of information 1982-05-11