Heat exchanger
CA 2290269 A1 · Owner: Taupadel, Kurt · Inventors: Taupadel, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat exchanger is formed of sections arranged in a row particularly for hot water central heating systems. The sections of the heat exchanger are portions of extruded polygonal tubes of aluminum or aluminum alloys with two sides which are arranged opposite each other and extend parallel to each other. The sections are arranged in a row with these sides placed on each other and are connected at the sides. The sides have in the upper and lower areas thereof recesses which form openings of the sides. The upper and lower end faces of the sections are tightly closed by a bottom and a cover.
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 23, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 23, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 23, 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.