Fire protection gate and correlated fire protection inset
CA 2541440 C · Owner: Beyer, Ralph · Inventors: Keller, Horst; Beyer, Ralph; Bernard, Jean-Luc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
At a fire protection gate with an encompassing structure and bilateral steel plate shells, between which a fire protection inset is provided consisting of at least an , insulating element in the form of a plate of mineral fibers soluble in a physical milieu and , reinforced with a binding agent, the composition of the mineral fibers of said insulating element features an , alkali/earth alkali-mass relation of < 1 and the fiber structure of said insulating element is , determined by an average geometrical fiber diameter of <= 4 µm a , gross density in the range , of 60 to 130 kg/m3 and a portion of the binding agent relative to the fiber , mass, in the range of 1 to 3 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 April 10, 2012. 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.