A method for transmitting location information on a digital map
CA 2372286 C · Owner: Yamada, Naoki · Inventors: Kawasato, Takashi; Maeda, Hiroyuki; Miyama, Satoko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
when transmitting an on-road location on a digital map an information provider transmits, as on-road location information string of coordinates information representing the road shape of a road section includinq the on-road location having a predetermined length additional information including at least one information item chosen from a group of the attribute information on the road including the road location and detailed information on the nodes is the road section and relative information indicating the on-road location in the road section. Receiving party receiving this on-road location information performs shape matching to identify the road section on a digital map and uses relative …
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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 February 14, 2002 and granted August 9, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2024.
- 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.