Bath for the galvanic deposition of gold and gold alloys, and the use thereof
CA 2438207 A1 · Owner: Wieland Dental + Technik Gmbh & Co. Kg · Inventors: Ruebel, Susanne; Stuemke, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a bath for the galvanic deposition of gold and gold alloys, and to the use thereof for producing dental shaped elements wherein , the gold is present in the form of a gold sulfite complex. The inventive bath and the inventive use are characterized in that at least one bismuth compound is present in addition to the optional other metals and conventional additives for gold sulfites of the above-described kind. The bismuth compound is preferably a complex compound, especially one that contains the complexing agents NTA, HEDTA, TEPA, DTPA, EDNTA or EDTA. The invention has several advantages, the most important being that the bismuth can be added to the 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 February 28, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 28, 2024.
- 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.