Method of manufacturing thermoplastic membrane articles and methods of use
CA 2613447 C · Owner: Tippins, William D. · Inventors: Tippins, William D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A release liner web has thermoplastic membranes coated on opposite sides of the release liner web that are thermoplastically fused proximally to an edge of the release liner web, nearly doubling the width of thermoplastic membranes that can be prepared using conventional equipment. Also described are geomembranes prepared from an amorphous or semi-crystalline thermoplastic sheet material and having a high gloss surface and methods of manufacture and , use of same.
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 19, 2006 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2026.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.