Improved exterior vision panel system
CA 2487102 A1 · Owner: Advanced Building Systems, Inc. · Inventors: Ting, Raymond M.L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a preferred embodiment, a window perimeter frame (15-17) and a window panel frame (12-14) form a first exterior water flow-restrictor between the window perimeter frame (15-17) and the window panel frame (12-14) that forms an outer airloop (22) that is maintained at the same pressure as the environment exterior to the building. A water restrictor and an air seal (21) are provided between the airloop and the building interior such that the air seal (21) does not have to cope with water from the exterior environment. Similar water restrictors (WS) and air seals (43a, IS) are placed in between the window perimeter frame (15-17) and building as well as between the window frame (12- …
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 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2025.
- 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.