Logical mapping of data objects using data spaces
CA 2285089 C · Owner: Fecteau, Jean Gilles · Inventors: Fecteau, Jean Gilles; Kollar, Lubor J.; Kligerman, Eugene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Method and means are provided for simulating a contiguous data space within a computer, memory, and for placing and accessing data objects of various sizes within the simulated, contiguous data space. Multiple sub-data spaces are concatenated in such a way that each page, and each sub-data space in the contiguous data space are uniquely identified. Data objects are, placed in the contiguous data space and at the first reference to a page of the data object, only the, segment containing the referenced page in the contiguous data space is mapped to the database, storage disk. Once a data space page is mapped the operating system can read , the page into memory without requesting a disk …
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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 November 12, 1991 and granted May 9, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2013.
- 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.