Expired Canadian patentCanada
Powder coating composition containing a resin, a curing agent and zinc
CA 2074329 C · Owner: Akzo N.V. · Inventors: Durand, Dominique
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an improved powder coating composition comprising (a) a resin (b) a curing, agent and (c) zinc, wherein the zinc is a mixture of (c1) lamellar zinc and (c2) zinc dust.
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 July 21, 1992 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 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.
FiledJuly 21, 1992
GrantedApril 22, 2003
Term endedJuly 21, 2012
Patent numberCA 2074329 C
Classification (IPC)C09D5/46 +2 more
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.