Polyolefin articles
CA 2577322 C · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Walter, Philipp; Zingg, Juerg; Hild, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for improving the dimensional stability of a shaped article made of a composition containing a nucleated polymeric material which comprises adding , to the polymeric material a divalent metal alcoholate of a polyhydroxy-(C2- C20alkane) before shaping.
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 September 5, 2005 and granted April 1, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 5, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.