Hot-melt adhesive provided in the form of granulated material
CA 2446919 C · Owner: Petry, Gerald · Inventors: Primke, Hartmut; Rudolf, Michael; Wichelhaus, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A one part moisture reactive adhesive composition in the form of particles and including (a) one or more polymeric constituents wherein at least one of the polymeric constituents contains one or more isocyanate groups and a polyester component and (b) at , least one tackifying resin. The particles remain pourable at temperatures up to 40 degrees C. A process for producing a one part moisture reactive hot-melt adhesive in the form of particles and comprised of (i) one or more polymeric constituents, wherein at least one of the polymeric constituents contains one of more isocyanate groups and a polyester component, and (ii) at least one tackifying resin.
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 April 30, 2002 and granted March 22, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2024.
- 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.