Vapor and radiant barrier
CA 2365778 C · Owner: Polyair Inter Pack Inc. · Inventors: Bergeron, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is disclosed the use of a vapor and radiant barrier membrane for covering a wall surface for insulation applications in the construction industry. The membrane comprises a facing layer which contains a radiant aluminum foil for heat reflectivity, and a backing layer laminated to the facing layer. The backing layer is made of polyethylene and has a thickness that limits vapor permeability.
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 11, 2000 and granted January 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 11, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 11, 2022.
- 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.