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Expired Canadian patentCanada

Fire protection material

CA 1339986 C · Owner: Pastureau, Nicole · Inventors: Pastureau, Nicole

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

This material, essentially characterised in that it is flexible, employs simultaneously the two phenomena of intumescence and endothermicity to obtain optimal protection characteristics maintaining the element to be protected at a temperature below or in the order of 150°C when it is subjected to thermal attack corresponding to a flame temperature of 700 to 1 000° for a duration of at least one hour for a thickness of the material between 10 and 20 mm comprises a binder (silicone elastomer) in a proportion of 30 to 35% by weight; a reinforcing charge (a metal oxide compatible with said silicone elastomer) in a proportion of 17 to 23% by weigh ; an active charge (an intumescent agent) in 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

  • Granted August 4, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 15, 1989
GrantedAugust 4, 1998
Term endedAugust 4, 2015
Patent numberCA 1339986 C
Classification (IPC)C09K21/14 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedJune 15, 1989Patent grantedAug 4, 1998Term endedAug 4, 2015

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.