System and method for communicating digitally-encoded acoustic information across a network between computers
CA 2256875 C · Owner: Morris, James E. G. · Inventors: Lerner, Edward A.; Morris, James E. G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system (100) for communicating digitally-encoded acoustic information across a computer network (120) between computers (110). The system includes a plurality of client computers (110) coupled together via a computer network (120). Each client computer (110) includes a communications interface memory, a sound processor and a sound mixer. The communications interface is coupled to the computer network (120) and receives digitally-encoded acoustic signals from the other client computers (110) attached to the network. The memory is coupled to the communications interface and stores separately the received acoustic signals. The sound processor is coupled to the memory and enhances …
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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 4, 1997 and granted September 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2019.
- 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.