Database indexing method and apparatus
CA 2451208 A1 · Owner: Vagnozzi, Paul P. · Inventors: Vagnozzi, Paul P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A database (20) indexing method and apparatus which includes an index (30) structure for indexing a plurality of objects that are logically divided into fine slices of 8,000 records (22) each and the fine slices are grouped into , coarse slices of 4,000 fine slices each. The indexes include fine and coarse keys, each of which corresponds to a particular data value and a particular fine or coarse slice. Bit vectors are used to determine which of the fine slices or objects identified by the fine slices have particular attributes and these bit vectors can be stored in compressed format. The index structure can be used to index data where no data records exist. A word indexing technique …
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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 June 21, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 21, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2024.
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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.