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CA 2004349 C · Owner: Keating, Raymond · Inventors: Sansone, Ronald P.; Durst, Robert T. Jr.; Schumacher, Karl H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A communication system for processing information for distribution, including: a central data station a plurality of, user stations, a communication link interconnecting the user stations with the central data stations each of the user stations, including means for accessing the central station the central, station including a data base of distribution information the, user station including means for accessing the central data station data base, the central data station including means responsive to the user usage pattern for providing data to the station which optimizes rate and time of distribution.
Read the whole patent
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 December 1, 1989 and granted February 15, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 1, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 1, 2011.
- 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.