Identity-coded surface with reference points
CA 2371968 C · Owner: Walmsley, Simon Robert · Inventors: Walmsley, Simon Robert; Silverbrook, Kia; Lapstun, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A region defined in relation to a surface and a method for defining such a , region; coded data being disposed within the region the coded data being , indicative of an identity of the region and of a plurality of points within the region; in one embodiment, the coded data comprising a plurality of tags each tag being indicative of the region identity and of its own position within the region.
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 May 24, 2000 and granted November 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 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.