Dehumidifier for oil-insulated transformer, choke coil, and tap changer
CA 2520989 C · Owner: Brill, Rainer · Inventors: Viereck, Karsten; Eichert, Manfred; Kugler, Kurt
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an air-dehumidifier comprising a filter insert which , is configured as a housing filled with a moisture-absorbent granulate and is situated in a cylinder. A heating device is provided to regenerate the granulate. To guarantee the targeted condensation and drainage of the moisture that has been driven off in the heating process the base of the cylinder has , a special funnel-shaped contour and consists of a material with an excellent specific thermal conductivity.
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 April 1, 2004 and granted January 22, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 1, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 1, 2026.
- 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.