Method of coating melamine resin on laminating paper
CA 2210180 C · Owner: Premark Rwp Holdings, Inc. · Inventors: Ma, Muyuan M.; Gaa, Peter C.; Lay, Timothy J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Decorative paper with a wear resistant decorative is made by limiting the flow of melamine resin through the decorative paper. A partially cured melamine resin impregnated overlay is placed over non impregnated decorative paper and cured attemperatures of about 230-310°F (110-155°C) and pressures of greater than about 300 psi (20 bar) and preferably about 750-1500 psi (51-102 bar) for causing melamine resin to flow from the overlay into the decorative paper and for substantially fully curing the melamine resin. Flow of the melamine resin is limited to about 10-20 and preferably about 12-17 percent by weight of the impregnated overlay. Flow of melamine resin in impregnated decorative paper …
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 July 10, 1997 and granted January 15, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 10, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2019.
- 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.