Functional organic powders, methods for production and use thereof
CA 2438532 A1 · Owner: Stockbrink, Ute · Inventors: Stockbrink, Ute; Bremser, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the use of a co-polymer (A) which may be produced by , means of radical polymerisation of a) at least one olefinic unsaturated monomer and b) at least one olefinic unsaturated monomer different from , olefinic unsaturated monomer (a) of general formula (I) R1R2C=CR3R4 (I) where the groups R1, R2, R3 and R4 independently = H substituted or , unsubstituted alkyl, cycloalkyl alkylcycloalkyl, cycloalkylalkyl, aryl alkylaryl, cycloalkylaryl, arylalkyl or arylcycloalkyl with the proviso that , at least two of the variables R1 R2, R3 and R4 = substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl, in particular substituted or unsubstituted aryl, in an aqueous or …
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 May 24, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 24, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2024.
- 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.