System and method for synchronizing copies of data in a computer system
CA 2391680 C · Owner: Ngan, Robert · Inventors: Kerulis, John; Rasmussen, Jay; Rittenhouse, Brian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved synchronization, system and method for copies of data in a computer system. The computer system comprises a cluster wherein each computer in the cluster may store a local copy of a data set along with a validity flag for the local copy. The computer system further comprises a coupling system which is connected to each of the computers in the cluster through a coupling system interface program, wherein the coupling system is configured to coordinate the data sharing and workload of the cluster. The computer system also comprises an external data storage shared by the computers in the cluster One, of the computers may read a first copy of the data set from a primary data set on …
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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 29, 2000 and granted April 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 29, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 29, 2022.
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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.