Flame retardant non-dripping polycarbonate compositions exhibiting improved thick section impact
CA 1250687 A · Owner: General Electric Company · Inventors: Mark, Victor
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Flame retardant and drip-retardant polycarbonate compositions exhibiting good thick section impact comprised of, in physical admixture:, (i) at least one halogen-free and sulfur-containing polycarbonate resin derived from (a) at least one halogen-free, sulfur-free and non-polycyclic dihydric phenol, (b) at least one halogen-free thiodiphenol and (c) a carbonate precursor; and, (ii) fibrous glass. These compositions contain an amount of said fibrous glass and an amount of said thiodiphenol effective to render said compositions flame retardant and drip 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
- Granted February 28, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 28, 2006.
- 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.