A method for the manufacture of composite pieces of film
CA 2105600 C · Owner: Morton International Gmbh · Inventors: Schneidinger, Frank; Heinrich, Siegfried; Schetschok, Hans-Gunter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The method for the manufacture of pieces of composite film by gluing at least two pieces of, film with a polyurethane adhesive and moistening the layer of adhesive or the film not, provided with the adhesive, is characterised in that the moistening operation is carried out, using an aqueous solution of at least one catalyst which accelerates the hardening reaction of, the polyurethane adhesive.
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 September 7, 1993 and granted June 20, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2015.
- 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.