Mobile navigation system
CA 2356961 C · Owner: Infogation Corporation · Inventors: Pu, Qing Kent; Li, Hui Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A client navigation system establishes a wireless connection to a navigation server on a computer network. The client requests a route by uploading start and stop specifications. The server calculates an optimal route based on realtime data available on the network. The optimal route is downloaded to the client in a natural language description and is independent from the local mapping database software on the client and includes a plain text description for each link. The client reconstructs the optimal route which is displayed on the client navigation system. A user-interface that anticipates data being entered by users minimizes the data-entry process. The current GPS position is …
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 January 3, 2000 and granted September 23, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 3, 2022.
- 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.