Flame retardant conductive polymer composition device
CA 2090229 C · Owner: Tyco International (Pa) Inc. · Inventors: Batliwalla, Neville S.; Larkin, Brian S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A melt-extrudable conductive polymer composition which contains a polymer a , particulate conductive filler, a particulate non-conductive filler and a flame retardant and heaters prepared from these , compositions. Heaters can be prepared in standard strip heater form (1) where electrodes (5 7) are embedded in the conductive , polymer composition (3) which provides the resistive element. A polymeric jacket (9) surrounds the heater core. When compositions of the invention are tested in a standard arc propagation test, an arc will not propagate. Compositions which are preferred contain carbon black, Sb2O3, and a halogenated flame retardant.
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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 September 10, 1991 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2013.
- 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.