Enclosure impervious to gas and to vacuum providing thermal insulation for use with an induction heating device
CA 2380812 C · Owner: Usinor · Inventors: Anderhuber, Marc; Couffet, Claude; Griffay, Gerard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Enclosure impervious to gas and to vacuum for use in an electromagnetic induction heating device of a product moving within the said enclosure characterised in that it contains a sheath (1) made of a material impervious to gas and to vacuum and providing thermal insulation the inner faces of the said sheath being protected by a heat shield (2) composed of a matrix of tiles made from a thermally insulating material and a plurality of tubes (4) cooled by circulating a fluid the tubes embedded in the said matrix of tiles. Application specific to a moving strip of stainless steel heated by electromagnetic induction in a protective atmosphere with high hydrogen content.
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 10, 2002 and granted August 12, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 10, 2024.
- 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.