Universal dynamic navigation, surveillance, emergency location, and collision avoidance system and method
CA 2089884 C · Owner: Fraughton, Edward J. · Inventors: Berger, Philip H.; Fraughton, Edward J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A craft tracking and collision avoidance system is disclosed. The system allows the positions of a plurality of craft (30 32) either on land, sea, air or space, to be monitored. Each craft (30 32) determines its own, position using an existing position determining system (100) such as LORAN or GPS. Each craft (30, 32) then transmits a radio frequency signal into which position information, preferably identifying information and other messages, have been encoded. Each craft (30 32) broadcasts its , position, identifying information and other messages on a regular basis without the need for any interrogation signal. The broadcast position and identification information can be received by …
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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 August 13, 1991 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2013.
- 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.