Apparatus for the continuous etching and aluminum plating of stainless steel strips
CA 2016893 C · Owner: Nisshin Steel Co. Ltd. · Inventors: Boswell, Peter; Zega, Bogdan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The apparatus of the present invention provides for etching of a stainless steel strip by passing the strip through reduced-pressure electric plasma discharge zones and dip-coating of the etched strip in a bath of molten aluminum. The strip brought to cathode potential defilades continuously in registration with the magnet elements and anodes of a plurality of consecutively disposed magnetron devices and, therefore, directly into said molten metal bath.
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 May 16, 1990 and granted January 4, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2012.
- 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.