Radio communication apparatus having a simple structure
CA 2014865 C · Owner: Nec Corporation · Inventors: Iwahashi, Koji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a radio communication apparatus comprising a transmitting portion (12) supplied with input baseband signals for selectively transmitting the input baseband signals in response to a selection signal (13) the, transmitting portion comprises a selector (22) for selecting one of the input baseband signals as a selected baseband signal in response to the selection signal. A level controller (23) has a controllable gain and controls the selected baseband signal so that the selected baseband signal has a level which is determined by the controllable gain. A gain controller (24) has predetermined gains in correspondence to the input baseband signals and controls the controllable gain in response …
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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 April 19, 1990 and granted March 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 2012.
- 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.