Thermoplastic moulding compositions
CA 2099464 A1 · Owner: Ott, Karl-Heinz · Inventors: Ott, Karl-Heinz; Piejko, Karl-Erwin; Leitz, Edgar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Thermoplastic moulding compositions, A b s t r a c t Thermoplastic moulding compositions containing A) ABS-type resin, B) aromatic polycarbonate resins C) a compound bearing several carboxyl groups or mixtures thereof and optionally, D) further polymer resins characterised in that an ABS resin with at least one basically acting additive is used as component A component C, is selected from compounds having a molecular weight of from 150 to 260 having at least two carboxyl groups (-COOH) in the molecule, and the weight ratio of basically acting additive in A: carboxyl groups in C is from 5 : 1 to 1 : 1.
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 June 30, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 30, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 30, 2015.
- 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.