Monopulse reply extractor for ssr navigation systems
CA 2114545 C · Owner: Cardion, Inc. · Inventors: Stein, Robert H.; Verbeke, Charles E. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An SSR reply decoding system for separating pulse codes of a series of closelyspaced or overlapping SSR replies is disclosed. A delay line (11) is connected to receive pulses representing the leading edge of each SSR reply code pulse. The delay line (11) has a length corresponding to at least two bracket lengths of an SSR reply. A bracket decoder (12) is connected to respective taps (F1, F2) of the delay line (11) for determining the beginning and end of a first SSR reply. A phantom reply detector (11) is connected to the remaining taps for inhibiting the bracket decoder when two replies are represented by pulses in the delay lines one of the replies having a pulse space from the pulse …
Read the whole patent
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 July 30, 1992 and granted November 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 30, 2014.
- 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.