Fluorinated polyether compositions
CA 2512005 C · Owner: Elsbernd, Cheryl L. S. · Inventors: Buckanin, Richard S.; Vitcak, Daniel R.; Elsbernd, Cheryl L. S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Described are fluorinated polyether compounds having a molecular weight range between 750 g/mol and 4000 g/mol where such polyether compounds are intermediates used in fluorinated compositions for treating various substrates.
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 November 26, 2003 and granted February 7, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 26, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 26, 2025.
- 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.