Window
CA 1309302 C · Owner: Paloheimo Oy · Inventors: Lentonen, Risto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A frame for a window consists of a plurality of glazed sashes, each glazed sash including a window pane. There are an outer glazed sash an inner, room-side glazed sash and an intermediate glazed sash and at least one air channel. The inner glazed sash and the intermediate glazed sash are connected together so as to form a combined assembly capable of installation in the frame as a unit. The assembly includes an electric heating element provided on the room-side window pane of the assembly. A reflective layer is provided upon a pane surface of the window assembly which surface is situated outwardly of the heating element to reflect back in a room-side direction heat radiation coming outward …
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
- Granted October 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 2009.
- 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.