Process and device for assembling insulating glass panes filled with a gas other than air
CA 2087187 C · Owner: Lenhardt, Karl · Inventors: Lenhardt, Karl; Bogner, Uwe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
To fill insulating glass panes with a heavy gas one of, the glass panes from which the insulating glass pane is formed is at first only partly joined to the other glass pane during assembly and it is bent along one edge to form a temporary, slit-shaped opening between the glass plate and the spacer, through which a heavy gas can be introduced into the space inside the insulating glass pane.
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 July 12, 1991 and granted April 24, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2013.
- 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.