Database query technique
CA 2282156 A1 · Owner: International Computers Limited · Inventors: Oldfield, Daniel Emlyn; Newman, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A computer system includes a graphical user interface which, enables a user to create and update a database query in a simple manner. The interface displays logic conditions within nested graphical containers (e. g. boxes) representing nested boolean AND and OR expressions. Containers and conditions may be dragged around to modify the logic. New containers may be created within existing containers. New conditions may be created within existing containers, by selecting a condition type from a predetermined list of condition types and then, entering details specific to the selected type. The query is used to access the database, so as to identify a subset of records that satisfy the query, …
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 September 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2021.
- 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.