Air-containing insulating sheet
CA 1054326 A · Owner: Paquette, Rolland · Inventors: Paquette, Rolland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air-containing sheet useful for insulation and other purposes as well as a method of making such a sheet is provided. The sheet comprises, a pair of spaced air-impervious layers, for example of flexible plastic having outer edges. The sheets are hermetically sealed about these edges. The sheet has inlet-outlet means for inflation or deflation of the sheet. A series of spaced parallel partitions extending between and secured to opposite layers divides the space between the sheets into sections. Air-communication means associated with the partitions, permits passage of air between adjacent sections. Such a sheet permits a single layer of air to be held between two layers of plastic, with …
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 May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
- 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.