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US 2023/0407438 A1Published application
Timepiece, piece of jewellery or gemstone jewellery made of gold
AssigneeOmega SA
InventorsDenis VINCENT, Stéphane LAUPER, Gregory KISSLING
Life of this patent
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Abstract
A gold alloy may contain, by weight, between 73% and 77% of gold, between 5% and 11% of silver, between 1% and 7% of palladium, and between 10% and 18% of copper. The gold alloy may include iridium, rhenium, and/or ruthenium in up to 0.05 wt. %. The gold alloy may have an a* value in a range of from 3 to 9, and a b* value in a range of from 12 to 18, in CIELAB color space. A timepiece, piece of jewelry, or gemstone jewelry, may be made of such a gold alloy.
Claims12
A gold alloy comprising, by weight:
- gold in a range of from 73 to;
- silver in a range of from 5 to 9.9% silver;
- palladium in a range of from 1 to 4.9%;
- and
- copper in a range of from 10 to 18%.
2 more elements
Dependencies are inferred from the claim text.