Climate, respectively ventilation channel
CA 2541687 C · Owner: Bernard, Jean-Luc · Inventors: Bernard, Jean-Luc; Keller, Horst; Andersson, Leif
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Insulating elements with a resistance to temperature for meeting the demands of normative flame-resistance ratings are used for the inner and/or outer cladding of an air-conditioning and ventilating duct. The fiber composition of these insulating elements has an alkali/earth-alkali mass ratio of < 1 the , fiber structure thereof is specified by a mean geometric fiber diameter <= 4 ~m, its bulk density ranges from 20 to 120 kg/m3 and its proportion of binders, when provided in the form of a plate ranges from 4.5 to 7 % by , weight or, when provided in the form of a wire mesh mat ranges from 0.5 to 1 , % by weight.
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 October 4, 2004 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 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.