Preparation of metal salts of carboxyl-containing polymers
CA 1331072 C · Owner: Denzinger, Walter · Inventors: Goertz, Hans-Helmut; Denzinger, Walter; Raubenheimer, Hans-Juergen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal salts of carboxylcontaining polymers are prepared by suspending carboxyland/or carboxylic anhydride group-containing polymers in an inert solvent, reacting with a pulverulent basic metal compound, and then working up the suspension.
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
- Granted July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
- 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.