Coated article having the appearance of stainless steel
CA 2409180 A1 · Owner: Chen, Guocun · Inventors: Chen, Guocun
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An article is coated with a multi-layer decorative and protective coating having the appearance of stainless steel (Figure 3). The coating comprises one or more electroplated layers on the surface of said article and vapor deposited on the electroplated layers a color layer comprised of the reaction products of refractory metal or refractory metal alloy nitrogen and oxygen , wherein the total nitrogen and oxygen content is from about 4 to about 32 atomic percent with the nitrogen content being at least about 3 atomic percent.
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 April 4, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 4, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 4, 2024.
- 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.