Resin compositions containing amides as nucleating agents
CA 2514034 C · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Schmidt, Hans-Werner; Blomenhofer, Markus; Stoll, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition containing a) a natural or synthetic polymer and b) one or more compounds of the formula (I), (II) or (III) wherein R1 R2 and R3 or Y1, Y2 , and Y3 or Z1, Z2 and Z3 are e.g. branched C3-C20alkyl.
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 February 9, 2004 and granted April 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2026.
- 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.