Flame-resistant polycarbonate abs moulding materials
CA 2300215 C · Owner: Keller, Bernd · Inventors: Keller, Bernd; Eckel, Thomas; Wittmann, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flame-resistant, thermoplastic moulding compositions containing a mixture of two , aromatic polycarbonates A.1 and A.2 with different solution viscosities a , vinyl(co)polymer made from one or at least two ethylenically unsaturated monomers, a , graft polymer obtainable by graft polymerisation of at least two monomers selected , from chloroprene, 1,3-butadiene isoprene, styrene, acrylonitrile, ethylene propylene, vinyl acetate and (meth)acrylates with 1 to 18 carbon atoms in the alcohol component, a phosphorus compound, a fluorinated polyolefin and an inorganic compound with an , average particle diameter of up to 200 nm.
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
- Filed July 29, 1998 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 29, 2020.
- 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.