Catalysed cationic paint binders, process for their preparation, and their use
CA 2118124 C · Owner: Vianova Resins Aktiengesellschaft · Inventors: Urbano, Edmund; Schmolzer, Gerhard; Schipfer, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Catalyzed, cationic lacquer binders which can be diluted in water after being protonized and which contain bismuth salts of aliphatic hydroxycarboxylic acids are disclosed. The bismuth salts of lactic acid and of dimethylolpropionic acid are particularly appropriate. The compositions are used in cathodically precipitable dip laquers.
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 27, 1993 and granted November 11, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 2015.
- 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.