Removable water-borne polyurethane coating compositions
CA 1293576 C · Owner: Aoyama, Ichiro · Inventors: Aoyama, Ichiro; Gomi, Tadashi; Sono, Nobuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Removable water-borne urethane resin coating composition comprising polyurethane resin containing carboxyl groups and/or carboxylate groups and polyvalent metal complex as a cross-linking agent and method for removing the coating formed by using the removable water-borne urethane resin coating composition which comprises treating said coating with a ligand containing alkaline solution and removing the coating. The coating formed by using the composition is superior in water resistance, recoatability detergent, resistance, black heel mark resistance abrasion resistance, and service life.
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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
- 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.