Expired Canadian patentCanada
Analysis alternates in context trees
CA 2526799 C · Owner: Microsoft Corporation · Inventors: Kannapel, Timothy H.; Szilagyi, Zoltan C.; Wakeam, Jamie N.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system, method, data structure, and application programming interface is described that stores alternate recognition results in an ink tree lattice.
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 November 10, 2005 and granted October 6, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 10, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 10, 2005
GrantedOctober 6, 2015
Term endedNovember 10, 2025
Patent numberCA 2526799 C
Classification (IPC)G06K9/62 +1 more
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.