Data base processing system using multiprocessor system
CA 2011807 C · Owner: Sekine, Yutaka · Inventors: Hayashi, Tomohiro; Saito, Kazuhiko; Shimogai, Yoshinori
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a data base processing system using a multi-processor system, the data base processing system includes: a storage unit provided in the shared memory for storing data base management information representing either and object of a shared processing operation or an object of a local processing operation for every resource; and access management unit provided in each of the processor modules for performing an access control for an access request to the data base under either the shared processing operation or the local processing operation in accordance with the data base management information, the shared processing operation being symmetrically performed and the local, processing …
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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 March 15, 1990 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2012.
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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.