Article having a coating thereon
CA 2236145 C · Owner: Moysan, Stephen R. Iii · Inventors: Sugg, Rolin W.; Welty, Richard P.; Moysan, Stephen R. Iii
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 coating comprising a nickel layer deposited on the surface of the article a palladium, layer deposited on the nickel layer a palladium-nickel alloy layer, deposited on the palladium layer a non-precious refractory metal, such as zirconium layer deposited on the palladium-nickel alloy layer, a sandwich layer comprised of alternating layers of a non-precious refractory metal compound such as zirconium nitride and a refractory metal such as zirconium deposited on the non-precious refractory metal layer, a non-precious refractory metal compound such as zirconium nitride layer deposited on the sandwich layer and a layer comprised of a non-precious …
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 29, 1998 and granted August 21, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2020.
- 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.