Wai-Cheung Tang — 18 Patents at Com Dev

Wai-Cheung Tang has been granted 18 US patents while listed as an inventor at Com Dev. The first was granted in 1985 and the most recent in October 2010. Wai-Cheung Tang ranks #245,716 of 4,157,543 US inventors in our database (top 5.9%). Patent records list Wai-Cheung Tang in Kitchener, ON, CA.

Issued Patents All Time

Showing 1–18 of 18 patents

Patent #	Title	Co-Inventors	Date
7813699	Transceiver redundancy in an electronic toll collection system	Thua Van Ho, Daniel Terrier, Roger Shun Hong Tong, Japjeev Kohli	2010-10-12
7463197	Multi-band antenna	Gholamreza Rafi, Safieddin Safavi-Naeini, Sujeet K. Chaudhuri	2008-12-09
7408480	Dual mode electronic toll collection transponder	Henry Sun Yee Woo, Paul Manuel, Weimin He, Daniel Terrier, Roger Shun Hong Tong	2008-08-05
7388501	Method of enabling two-state operation of electronic toll collection system	Thua Van Ho	2008-06-17
7342500	Compact microstrip transponder antenna	Thua Van Ho	2008-03-11
7262711	External indicator for electronic toll communications	Jeffrey Zhu	2007-08-28
7233260	Electronic toll collection system	Thua Van Ho	2007-06-19
7183976	Compact inverted-F antenna	Ke-Li Wu, Yong Huang	2007-02-27
6882251	Microwave filter with adaptive predistortion	Ming Yu, Van Dokas	2005-04-19
5608363	Folded single mode dielectric resonator filter with cross couplings between non-sequential adjacent resonators and cross diagonal couplings between non-sequential contiguous resonators	Richard J. Cameron, Van Dokas	1997-03-04
5589807	Multi-mode temperature compensated filters and a method of constructing and compensating therefor	—	1996-12-31
4881051	Dielectric image-resonator multiplexer	Richard J. Cameron, David Bryant	1989-11-14
4675630	Triple mode dielectric loaded bandpass filter	David Siu, Bruce C. Beggs, Joseph Sferrazza	1987-06-23
4652843	Planar dual-mode cavity filters including dielectric resonators	David Siu, Bruce C. Beggs, Joseph Sferrazza	1987-03-24
4644305	Odd order elliptic waveguide cavity filters	Joseph Frenna, David Siu	1987-02-17
4630009	Cascade waveguide triple-mode filters useable as a group delay equalizer	—	1986-12-16
4622523	Group delay equalizers using short circuit triple mode filters	—	1986-11-11
4513264	Bandpass filter with plurality of wave-guide cavities	James B. Dorey	1985-04-23

Wai-Cheung Tang — 18 Patents

Issued Patents All Time

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