Predecorated wallboard joint and method of joining predecorated wallboards to form a concealed joint
CA 2072005 C · Owner: J P Walls, Inc. · Inventors: Fisher, Jacob E. Jr.; Younts, Patty L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A wall formed from square edge predecorated wallboards and the method of constructing a seamless wall from square edge predecorated wallboards (10) comprising folding the edge flaps of two abutting square edge wallboards (10) away from the joint, cutting a groove (G) along the length of the joint formed by the square edge abutting wallboards (10), adhering a joint strip (30) comprising a rib (34) which fits within the groove (G) and a support strip (32) therefore which extends laterally over the uncovered portion of each gypsum board adjacent to the joint and double-cutting , and adhering the edge flaps of the wallboards (10) to the joint strip (32) so as to form a seamless appearing …
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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 December 13, 1990 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 13, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 13, 2012.
- 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.