Method for enhancing the uniform electroless deposition of gold onto a palladium substrate
CA 2076088 C · Owner: Iacovangelo, Charles D. · Inventors: Iacovangelo, Charles D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It has been found that the prior activation of a palladium substrate, such as palladium electrolessly deposited onto nickel, in an aqueous solution of an alkali metal hydroxide, an alkali metal carbonate and a reducing agent, for example, dimethylamine borane can provide an, enhancement in the thickness and uniformity of electrolessly deposited gold when the activated substrate is placed in an electroless gold bath.
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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 August 13, 1992 and granted October 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2014.
- 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.