Flame retardant polycarbonate composition
CA 1068842 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
A flame retardant polycarbonate composition comprising in admixture an aromatic carbonate polymer and an additive which may be the metal salts of sulfonic acids of aromatic sulfoxides. Also, included herein are a nonopaque flame retardant polycarbonate composition of an aromatic carbonate polymer and an additive which may be the metal salts of sulfonic acids of aromatic sulfoxides; said aromatic carbonate polymer and additive having a refractive index in the range of 1.54 to 1.65.
Read the whole patent
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 25, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 25, 1996.
- 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.