.alpha.-halogenated acid esters with polyvalent alcohols as atom transfer radical polymerization initiators
CA 2359946 A1 · Owner: Rime, Francois · Inventors: Rime, Francois; Muhlebach, Andreas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to .alpha.-halogenated acid esters of polyvalent but at , least trivalent, alcohols which can be used as atom transfer radical polymerization initiators. Using said initiators block copolymers having branched structures can be produced.
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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 January 10, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 10, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 10, 2022.
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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.