Filler concentrates for use in thermoplastic materials
CA 2398699 C · Owner: Blanchard, Pierre · Inventors: Husson, Maurice; Blanchard, Pierre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns the use of high fluidity isotactic polypropylenes for preparing filler concentrates for use in olefin-type thermoplastic materials such as polypropylene polyethylene and generally: polymers used alone or in mixture based on polymerised ethylene monomers containing 2 to 6 carbon atoms alone or in mixture. The invention also concerns filler concentrates or masterbatches prepared from very high fluidity isotactic propylenes. The invention further concerns filled thermoplastic materials obtained by addition of selected propylenes of the invention and industrial products made from, or containing such thermoplastic materials.
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 14, 2001 and granted January 11, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 14, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 14, 2023.
- 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.