Two-phase cathodic electrocoat
CA 2010525 C · Owner: Basf Lacke + Farben Aktiengesellschaft · Inventors: Schupp, Hans; Schwerzel, Thomas; Huemke, Klaus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A two-phase cathodic electrocoat , is obtainable by coating an electrically conducting substrate with a mixture containing, A) an aqueous cationic dispersion of a polycondensation or polyaddition product, B) an aqueous cationic dispersion of a polycondensation or polyaddition product having a glass transition temperature of from -80 to 20°C, the polymers of dispersions (A) and (B) being mutually incompatible and, C) optionally a crosslinking agent a pigment paste, auxiliaries and/or additives and then baking.
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 February 21, 1990 and granted December 14, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 21, 2012.
- 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.