Method and equipement for prevention of cooling of electrochemical devices
CA 2180246 A1 · Owner: Leppanen, Jyrki Rainer · Inventors: Leppanen, Jyrki Rainer; Spiers, David John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a method and an equipment for prevention of cooling of electrochemical devices (10). The temperature of the electrochemical device (10) is measured and, as the temperature falls below a certain preset lower limit (Tminimum), an additional load (17) which is at least high enough so , that the electric current that it produces heats the electrochemical device (10), is connected to the device. The additional load (17) is disconnected from the electrochemical device (10) as the temperature has reached a certain preset upper limit (Tmaximum).
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 December 29, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 29, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 2016.
- 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.