Method and system for indexing and searching databases
CA 2507336 C · Owner: Microsoft Corporation · Inventors: Wen, Ji-Rong; Ma, Wei-Ying
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A search system generates an index for databases by generatively sampling the databases and uses that index to identify and formulate queries for , searching the databases. The generated index is referred to as a domainattribute , index and contains a domain-level index and site-level indexes. A site-level index for a database maps site attributes to distinct attribute values within the , database. The domain-level index for a domain maps attribute values to database , and site attribute pairs that contain those attribute values. To generate a site-level , index for a database within a certain domain the search system starts out , with an initial set of the sample data for 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 May 13, 2005 and granted December 24, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 13, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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Timeline
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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.