Method and system for conducting a multimedia phone call
CA 2242318 C · Owner: Lo, Kevin Chi Hin · Inventors: Lo, Kevin Chi Hin; Rohs, Charles Gerald; Michaud, Bertrand Marc-Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for conducting a multimedia telephone call. The apparatus carries out the method by establishing a telephone call between first and second customer premises equipment and generating at the first, customer premises equipment a frequency shift keyed, message containing a network resource locator. The FSK message is then transmitted from the first customer premises equipment to the second customer premises equipment during the telephone call and is received at the second customer premises equipment.
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 July 6, 1998 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2020.
- 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.