High performance, thermally insulating multipane glazing structure
CA 2022357 C · Owner: Booth, Robin · Inventors: Hood, Thomas G.; Booth, Robin; Vincent, Steve M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Multipane, insulating glazing structures having exceptional thermal insulation performance are provided. The novel multipane structures comprise two substantially parallel rigid glazing sheets spaced apart by an interior spacer of a low thermal conductivity closed cell, foamed polymer. In a preferred embodiment the glazing sheets are present in a four-pane structure filled with an inert gas and sealed with a gas-impermeable, continuous tape overlaying a curable high modulus sealant. Methods for manufacturing the novel glazing structures are disclosed as well.
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 31, 1990 and granted May 24, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 31, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 31, 2012.
- 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.