Titanium base electrode with barrier layer of tantalum or niobium oxide
CA 1204705 A · Owner: Permelec Electrode Ltd. · Inventors: Shimamune, Takayuki; Nitta, Hideo; Asano, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An electrolytic electrode having high durability for use in electrolysis where the generation of oxygen occurs and a process for the production of the electrolytic electrode, the electrolytic electrode comprising: (a) an electrode substrate of titanium or a titanium-based alloy; (b) an electrode coating of a metal oxide; and (c) an intermediate layer comprising an electrically conductive oxide of tantalum and/or niobium, provided between the electrode substrate (a) and the electrode coating (b) in a thickness, calculated as the metal of 0.001 to 2 g/m2.
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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 2003.
- 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.