Metal product with composite coating
CA 2071188 C · Owner: Bryson, James H. · Inventors: Blaser, Mark S.; Spearin, Elliott Y.; Bryson, James H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A procedure for improving the adherence in the, presence of moisture, of (a) a top coat of paint or polymer to (b) a metal substrate coated with another metal. The metal substrate is coated with a composite coating of particles of oxide dispersed in the coating metal. The surface energy of the composite coating is controlled. The article comprising the metal substrate plus composite coating need not be subjected to any phosphating and chromate sealing treatments before application of the top coat.
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 June 12, 1992 and granted December 5, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 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.
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.