System and associated method for facilitating push-to-talk communications
CA 2550561 C · Owner: Research In Motion Limited · Inventors: Jin, Xin; Zhao, Wen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A push-to-talk (PTT) mobile station having a PTT ready mode the mobile station having a controller adapted for executing computer program code; a memory connected to the controller for storing computer program code; computer program code stored in the memory and executable by the controller for operating the mobile station in the PTT ready mode selected from a plurality of PTT ready mode techniques for establishing a PTT session; and a radio subsystem connected to the controller and the memory the subsystem being configured for enabling the PTT mobile station to operate in the PTT ready mode for establishing one of the PTT session PTT traffic, or both the PTT session and PTT traffic.
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 June 14, 2006 and granted May 28, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 14, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.