Metal surface coating procedure using a powder primer and a top coat applied by metting, powder primer composite utilized and composite materials produced thereof
CA 2002109 C · Owner: Dutheil, Jean-Yves · Inventors: Dutheil, Jean-Yves; Perraud, Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for coating metal substrates with an adhesive primer and a polyamide-based and/or polyetheresteramide-based surface coating characterized by the fact that it comprises the following steps: (a) use of a powder application technique to coat the substrate with one or more coats of powdered adhesive primer the formulation of which is based on thermosetting resins; (b) heating of the substrate thus coated and immediately afterwards: (c) application by dipping in a fluidized bed of the polyamide-based and/or polyetheresteramide-based powdered surface coating. The invention also applies to other powder compounds that may be used as adhesive primers as well as composite materials: metal …
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 November 2, 1989 and granted February 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 2, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.