Temperature recovery system for an electronic programmable thermostat
CA 2004151 C · Owner: Hunter-Melnor, Inc. · Inventors: Mehta, Vinay
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of controlling a multistage heating system so as to minimize the energy required to bring the temperature of a predetermined volume of space to apredetermined temperature level is provided. The multistage heating system includes an energy efficient first heating mechanism and at least a less efficient second heating mechanism. First, a time period for the multistage heating system to bring the temperature of the predetermined volume of space to the predetermined temperature level is calculated. This calculated time period is provided into a plurality of zones each of the plurality of zones having an associated temperature limit. The first and second heating mechanisms are …
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 November 29, 1989 and granted September 6, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2011.
- 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.