Multipoint digital temperature controller
CA 2322802 A1 · Owner: Vasu Tech Limited · Inventors: Bhatnagar, Rajiv
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an electronic digital thermostat control unit comprising a linear temperature sensing element (1) connected to an A-D converter (3), a sensitivity and offset correction circuit (4) digital , comparators (5, 6), digital noise filters (7 8), a control latch (9), an , output drive and protection circuit (10) and a solid state switch (11) to produce the desired output with user input in either analogue form using a potentiometer (12) or a digital form using a switch with calibration and control data stored in a nonvolatile memory and a display unit (18) for displaying sensed or user set temperature. The invention further relates to the application of the …
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 March 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2021.
- 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.