Hydroxy-functional binder components
CA 2532897 C · Owner: Billiani, Johann · Inventors: Scherz, Johannes; Billiani, Johann; Zrin, Ewald
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to hydroxy-functional binder components ABC containing a linear or branched main , chain having a polymethylene structure -(CH2)n- or a polyester structure or a structure derived from the , fatty acid esters of glycerin or other polyvalent alcohols. The invention is characterized in that said , components have grafted cyclic imide structures on the main chain wherein the , imide-nitrogen atom is , substituted by a hydroxyalkyl group or a hydroxyalkyl-aryl group. The invention also relates to method for , the production of said components by reacting oleofinically unsaturated acid anhydrides B and , hydroxyamines C and to the utilization of the inventive components …
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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 July 13, 2004 and granted October 9, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 13, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.