Reinforced membranes for roofing and other applications
CA 2312103 A1 · Owner: Johns Manville International, Inc. · Inventors: Flynn, Allison; Hindi, Majid H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reinforced membrane, particularly well suited for use as a membrane in a single ply roofing membrane system includes, first and second thermoplastic olefin ("TPO") sheets and a polypropylene reinforcing mesh or scrim intermediate the first and second thermoplastic olefin sheets and bonded to the first and second thermoplastic olefin sheets.
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 June 22, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 22, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 22, 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.