Aqueous filler composition
CA 2085326 A1 · Owner: Schwab, Michael · Inventors: Exner, Reiner; Kuhn, Ute; Schwab, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Aqueous filler composition Aqueous filler composition comprising a polyester resin which is built up of the educts (a), (b) (c), (d), and (e) or their ester forming derivatives the sum of, the reactants corresponding to 100 mol-% and the ratio of the sum of the hydroxyl equivalents (eg OH) to the sum of the carboxyl equivalents in the reactants being between 0.5 and 2.0, where, (a) is at least one dicarboxylic acid which is not a sulfo or phosphorus monomer, (b) is 0 to 15 mol-% of at least one difunctional sulfo or phosphono monomer, the functional groups of which are carboxyl and/or hydroxyl groups, having at least one sulfonate or phosphonate group, (c) is at least one …
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 December 14, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 14, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 14, 2014.
- 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.