Fibres coated with a hydrophobic material
CA 2229974 C · Owner: Elf Atochem S.A. · Inventors: Flat, Jean-Jacques; Bonnet, Evelyne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns fibres coated by a hydrophobic material with an epoxy polydiene oligomer base. The coating results from the photopolymerization of a composition consisting of at least one epoxy polydiene oligomer as least one photoinitiator salt and possibly a reactive diluent. The fibres according to the invention, have good resistance to hydrolysis and good mechanical properties.
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 February 18, 1998 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2020.
- 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.