The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 19, 2007
Filed:
Oct. 05, 2004
Applicants:
Wai-cheung Tang, Mannheim, CA;
Thua Van Ho, Mississauga, CA;
Inventors:
Wai-Cheung Tang, Mannheim, CA;
Thua Van Ho, Mississauga, CA;
Assignee:
Mark IV Industries Corp., , CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G 1/00 (2006.01); G08B 13/14 (2006.01); G07B 15/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improved electronic toll collection system having two lane-based antennas per laneway. The antennas include an overhead antenna and a side mount antenna. The side mount antenna is disposed so as to communicate especially with license plate transponders. The two antennas are coupled to a transaction processing system for conducting toll transaction communications with a vehicle-mounted transponder through one of the two antennas.