Composition and method relating to a hot melt adhesive
CA 2576302 C · Owner: Kueppers, Michelle C. · Inventors: Burge, Kevin P.; Kueppers, Michelle C.; Vaughan, Steven R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention includes compositions and methods of using compositions that initially exhibit adhesion qualities and subsequently exhibit nonadhesion qualities. Compositions of the present invention include a hot melt adhesives that includes a copolymer of butene-1. The compositions are particularly useful in temporarily bonding substrates such as paperboard , boxes.
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 August 5, 2005 and granted November 13, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 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.