Antimicrobial additives
CA 2384531 A1 · Owner: Sosna, Friedrich · Inventors: Ottersbach, Peter; Kossmann, Beate; Sosna, Friedrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to microbicidal polymers and polymer blends obtained by , the polymerization of a monomer of formula (I) wherein R1 = -H or -CH3, R2 = , a branched or unbranched aliphatic hydrocarbon radical with between 1 and 5 carbon atoms, R3 = H, a branched or unbranched aliphatic hydrocarbon radical with between 1 and 7 carbon atoms and R4 = H a branched or unbranched , aliphatic hydrocarbon radical with between 1 and 7 carbon atoms R5 = H, a , branched or unbranched aliphatic hydrocarbon radical with between 1 and 7 carbon atoms, X = O, NH, NR5 and by the optional subsequent mixing of said polymers with at least one additional polymer. The microbicidal polymers or polymer …
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 July 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 8, 2022.
- 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.