Relative positioning method and relative positioning system using satellite
CA 2585141 C · Owner: Abe, Takenori · Inventors: Fujita, Takashi; Terada, Yukihiro; Abe, Takenori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A positioning system wherein radio waves from a GPS satellite (4) are received by a reference station (1), the absolute position of which is already known and a plurality of mobile stations (3) to perform relative positioning among particular stations, thereby determining the positions of the mobile stations (3). At least one of the mobile stations (3) is disposed such that a baseline limit length allowing relative positioning relative to the reference station (1) is exceeded, and the intervals between particular mobile stations (3) are shorter than the baseline limit length allowing relative positioning. Each of the stations (1,3) is equipped with a GPS receiver (11,21) that …
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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 October 29, 2004 and granted September 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 29, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.