Basement wall construction
CA 2134524 C · Owner: Hughes, John P. Jr. · Inventors: Hughes, John P. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A basement wall is formed by a series of vertical metal studs supported at their lower ends on a metal sill extending along the upper face of a concrete, footing. An insulating sheathing is mounted on the metal studs to form the wall outer surface. The sheathing is formed by two panel layers of rigid foam core insulator material. Edges of the inner panels are offset from the edges of, the outer panels to form labyrinth seals preventing migration of ground water through the sheathing.
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 October 27, 1994 and granted November 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 27, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2016.
- 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.