Corrosion resistant conductive parts
CA 2486687 C · Owner: Fuse, Naoki · Inventors: Takagi, Shinobu; Fuse, Naoki; Hisada, Tatsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a corrosion resistant conductive part which is made by forming a thin plated gold layer of thickness 100nm or less on a stainless steel sheet and for which high corrosion resistance is guaranteed even with a very thin gold layer. The part is characterized in that the maximum value "v" of atomic concentration of gold given by Auger analysis is at least 98% of the total atomic concentrations of all the elements which is deemed to be 100%, in the thin gold layer ranging from the surface to the interface of the gold layer and the metal substrate at which the descending curve of gold crosses the ascending curve of the most predominant component of the substrate metal.
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 November 2, 2004 and granted October 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.