Digital radio frequency compensation
CA 2054237 C · Owner: Ericsson Ge Mobile Communications Inc. · Inventors: Lindell, Karl Bo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for adjusting the frequency of transmissions between a base station and a mobile station. The mobile station detects the frequency of the signal received from the base station, determines whether the signal was received form the current base station and adjusts the output signal of a local crystal-controlled reference oscillator in accordance with the difference between the frequency of the output signal and the frequency of the received signal.
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 October 25, 1991 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.