Method and system for licensing program management within a distributed data processing system
CA 2182124 C · Owner: International Business Machines Corporation · Inventors: Fosdick, Eric L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system for managing utilization of licensed program within a distributed data processing system having a number of local systems which minimizes the amount of network communication traffic required for such management. Each permitted use of a licensed program by a distributed data processing system is indicated by a use token which may be transferred to selected systems throughout the distributed data processing system. These use tokens are then periodically redistributed throughout the distributed data processing system in response to a requested usage by a particular system within the distributed dataprocessing system. A use token transferred to a particular system is then …
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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 July 26, 1996 and granted June 20, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 26, 2018.
- 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.