Oxidation-insensitive polymer-stabilized noble metal colloids
CA 2412653 A1 · Owner: Basf Aktiengesellschaft · Inventors: Wessel, Helge; Bender, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In an oxidation-insensitive polymer-stabilized noble metal colloid comprising noble metal, particles which have one or more oxidation-insensitive polymers containing sulfonic acid, groups or phosphonic acid groups coordinated to their surface the polymers , are selected, from the group consisting of sulfonated partially fluorinated or fluorinated , polystyrene sulfonated, partially sulfonated or fluorinated alkylene-styrene copolymers sulfonated, perfluorinated alkylene-alkylene oxide copolymers sulfonated polystyrene, sulfonated, polyarylene oxides sulfonated polyarylene ether sulfones, sulfonated polyarylene ether, ketones. sulfonated polyphenylene sulfonated polyphenylene sulfide and …
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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 November 25, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 25, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 25, 2024.
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Timeline
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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.