Universal remote control system
CA 2092003 C · Owner: Darbee, Paul V. · Inventors: Darbee, Paul V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The universal remote control system includes a remote control comprising input elements for inputting commands into the remote control infrared signal, output circuitry including output elements for supplying an infrared signal to a, controlled device, central processing unit (CPU) coupled to the input elements and, to the signal output circuitry, a memory coupled to the CPU and data coupling circuitry including terminal structure coupled to the CPU for enabling code data, for controlling a variety of devices to be controlled to be supplied from outside the, remote control through the terminal structure and the CPU to the memory to set up the remote control for controlling the devices …
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 September 24, 1990 and granted November 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 24, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 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.