Database system having heterogeneous object types
CA 2469413 C · Owner: Barton, Lee B. · Inventors: Barton, Lee B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for extracting metadata for plural related objects of different types from a database includes defining a heterogeneous object type as a collection of database objects of different types. Upon a request to fetch a particular heterogeneous object, member objects of the heterogeneous object are fetched from the particular heterogeneous object in a specific order based on the definition of the heterogeneous object's type such as a valid order for re-, creating the particular heterogeneous object. The set of member objects to be fetched can be restricted according to at least one specified filter which , itself may be translated into a second filter according to a type of a …
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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 December 9, 2002 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2024.
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Timeline
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.