Flame retardant materials
CA 1292822 C · Owner: Farnum, Bruce W. · Inventors: Farnum, Bruce W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flame retardant formulation for application as an aqueous working dispersion onto surfaces of normally combustible materials. Upon exposure to elevated temperatures and/or flame, the formulation creates a substantially continuous protective film as it undergoes a transition of composition, with the protective film generally encapsulating and/or enveloping the surface of the article onto which it is applied. In addition to being insulative the film excludes, oxygen from the surface of the substrate and is capable of, radiating infrared and visible light when exposed to elevated temperatures. In the formulation, and upon exposure to elevated temperatures and/or flame, the material releases …
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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 December 3, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 3, 2008.
- 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.