Method for organising a database
CA 2539691 C · Owner: Kode · Inventors: Koskas, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for organising a relational database for a computer architecture comprising at least one processor and a memory characterised in that it involves stages consisting in producing a hierarchical expansion table forming a thesaurus on each of columns producing a radical tree for a set of line indexes on which said word appears for each word of each thesaurus and in storing the sequence of said values for each primary key by permutating the set of said values in order to find data.
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 21, 2004 and granted March 12, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 21, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 21, 2026.
- 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.