Textured release sheet, method of making textured decorative laminates therewith, and decorative laminate lay-ups including such sheet
CA 2268743 C · Owner: Premark Rwp Holdings, Inc. · Inventors: Palmer, Dorothy H.; Lee, Yein Ming
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of making a polypropylene textured release sheet for use in texturing decorative laminates includes, providing the polypropylene release sheet with texturing during the initial making of the sheet while the, polypropylene is still above its softening temperature. A decorative laminate lay-up includes a plurality of thermosetting resin impregnated layers having a top layer, with the textured polypropylene release sheet oriented adjacent the top layer. A method of forming a textured decorative laminate includes application of heat and pressure to the lay-up sufficient to form a textured decorative laminate.
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 7, 1999 and granted September 3, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2021.
- 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.