Method and device for radio communication in traffic guidance systems
CA 2205809 C · Owner: Hani-Prolectron Ag · Inventors: Gehrig, Josef
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This method is used for radio communication between central and peripheral units (LST, SUP, FZ, PAC, LSA) of a traffic guidance system which in , particular, is comprised of a master terminal (LST) vehicles (FZ) and passenger , information systems (PAC) and optical signal units (LSA) to control the flow of traffic which, communicate with one another via at least two voice and two data channels (SK1, SK2, DK1, DK2) in such a way that messages are transmitted from the central unit, (LST) to the peripheral units (FZ PAC) via the first data channel (DK1) and correspondingly from the peripheral units (FZ PAC) to the central unit (LST) , via the second data channel (DK2). Further, the central …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 5, 1996 and granted February 12, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 5, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.