Polyfluorinated vinylidene flexible metallic sheathed cable with enhanced flexion properties
CA 2105818 C · Owner: Elf Atochem S.A. · Inventors: Strassel, Albert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flexible metallic tube sheathed with a layer of polyvinylidene fluoride characterized by the interposition of a layer of polyurethane thermoplastic elastomer between the metal wall and the layer of polyvinylidene fluoride. This tube is specifically adapted to the oil and gas industry.
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 September 9, 1993 and granted May 12, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2015.
- 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.