J-channel backer material
CA 2506449 C · Owner: Collins, P. Michael · Inventors: Collins, P. Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A finishing member for masonry walls allows for simple installation and accurate placement of caulking around windows and doors in cavity wall construction. This invention accommodates a wide variety of window or door frame profiles particularly those having an outwardly directed channel such as so called J-channel frames for the detailing and finishing work required for proper installation of a window or door into a masonry veneer or cavity wall construction without requiring a highly skilled and labor intensive installation.
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 May 6, 2005 and granted April 30, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 6, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.