Molded and encapsulated fire retardant material
CA 2211214 A1 · Owner: Kohaut, John E. · Inventors: Bera, John F.; Kohaut, John E.; Castellani, Norman
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The fire-retardant material may be positioned in an article adapted to be installed in an opening in a fire-rated structure. It retards the transmission of heat and flame from a fire through the article and the structure opening so as to, enable the fire rating of the structure to be substantially the same with or without the structure opening and article therein. It further is adapted to be molded and encapsulated in a composition for sealing all side edges to retard the, aging and degrading process and to protect against damage, from high humidity and evaporation. It further includes substantial interior space to enable full expansion during exposure to increasing heat and flame from a …
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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 July 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 22, 2019.
- 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.