Wallcoverings
CA 1257509 A · Owner: Borden, Inc. · Inventors: Warren, Christopher B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pieces (15) of prepasted foamed wallcovering are made in a two-location process. At the first location a web of paper substrata (10a) with a formable coat (10b) is given a print (10c). At the second location the printed web is given a pre-paste coat (10d) with an adhesive capable of providing remoistanable features after tolerating heat conditions to be encountered during a subsequent foaming step, and the pasted, printed web is then given at the same location any subsequent treatment required (such as embossing) including heating to generate the foam.
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
- Granted July 18, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 18, 2006.
- 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.