Insulating concrete form system
CA 2298435 C · Owner: Doren, Gregory J. · Inventors: Macrae, Allan M.R.; Doren, Gregory J.; Cymbala, Patrick M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A concrete form foam block (1), of an Insulating Concrete Form System comprises a pair of opposed and parallel foam panels (2) spaced using a plurality of plastic ties (3). Each tie (3) comprises full panel height flanges (4) which engage the panels (2) and a web (5) portion extending therebetween. The web (5) comprises a plurality of horizontal members (9) preferably four or more, which are distributed substantially along the full height of the flanges (4). The web (5) includes a pair of full height antiflash members (14) for preventing the escape of flash during formation of mould-in panels. The top edges and bottom edges (24 25) of each panel (2) are , formed with longitudinal …
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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 February 9, 1998 and granted November 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 9, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 9, 2020.
- 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.