Zinc shot-blasting steel
CA 1265392 C · Owner: Nihon Parkerizing Co. Ltd. · Inventors: Hetsugi, Koji; Nagae, Yoshio; Sawazaki, Yoshihiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for improving the corrosion resistance and paint receptivity of a steel surface includes shot blasting the steel surface with particles of zinc or zinc alloy or particles coated with zinc or zinc alloy and then contacting the surface with a nickel containing acidic phosphate liquor.
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 February 6, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 6, 2007.
- 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.