Improved electroplating method and apparatus
CA 2249970 C · Owner: Cae Vanguard Inc. · Inventors: Zhang, Ming (Jason)
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an improved method for electroplating metallic ions onto a conductive substrate. In one embodiment the method comprises at least partially covering a selected surface of the conductive substrate with an electrode wrap that includes a pad having an abrasive surface. The metallic ions are electrically depositing onto the selected surface through the electrode wrap while the conductive substrate is moved (e.g. rotated) relative to the electrode wrap. A substantially constant frictional force is controllably applied from the abrasive surface onto the selected surface while the metallic ions are being deposited. In this manner a substantially constant abrasive …
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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 October 7, 1998 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 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.