Method for using a signaling channel to set up a call request for a push to talk (ptt) communication on a wireless communication network
CA 2571313 C · Owner: Gill, Harleen K. · Inventors: Gill, Harleen K.; Rosen, Eric C.; Razdan, Ashu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus and method for enabling fast set up for push-to-talk (PT) communications in a wireless communication network. PTT set up related messages are identified through a specially designated header and the messages with the special designated header are transmitted through signaling channels from a radio transmission unit to a mobile device.
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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 20, 2005 and granted May 29, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
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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.