Branched polyamides with unsaturated ends
CA 2503662 C · Owner: Arkema · Inventors: Linemann, Annett; Briffaud, Thierry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention concerns branched polyamides with unsaturated ends including: at least one pattern coming from a multifunctional monomer (A) having more than two functions at least some chains resulting from condensation in the presence of at least one unsaturated monoacid either of at least two different lactams or at least one lactam, at least one dicarboxylic acid and at least one diamine or a lactam or an alpha-omega-carboxylic amino acid or a diamine and a diacid, the proportion of (A) being less than 9% in weight of the set (A) and of the above monomers. The invention also concerns thermo-adhesives including these branched polyamides with unsaturated ends. They may be easily …
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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 April 19, 2005 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 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.