# US 10,119,177 B2 · Precious metal alloy for use in the jewelry and watch industry > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,177 B2 - Document ID: US10119177B2 - Status: Granted - Kind: B2 - Application number: 15/091,821 - Filed: 2016-04-06 - Published: 2016-07-28 - Granted: 2018-11-06 - Earliest claimed: 2015-02-11 - Assignees: C. Hafner GmbH & Co. - Applicants: C. Hafner GmbH & Co. KG - Inventors: Heinz-Guenter Schenzel; Thomas Laag - Web page: https://patentgrep.com/patent/US10119177B2 ## CPC - C22C 5/04: Alloys based on a platinum group metal - A44C 27/003: {Metallic alloys (alloys in general C22C)} - C22C 30/00: Alloys containing less than 50% by weight of each constituent - G04B 37/22: Materials or processes of manufacturing pocket watch or wrist watch cases {(machines or tools for the manufacture of clockwork cases G04D3/0064, G04D3/0097, G04D3/029; decoration or tools therefor G04B45/0076)} - C22C: ALLOYS (treatment of alloys C21D, C22F) - A44C: PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS - G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08) ## Abstract A precious metal alloy includes palladium and rhodium for manufacturing jewelry pieces like jewelry, jewelry articles, bijouterie, watches and watch cases and/or writing utensils and/or a component thereof. The precious metal alloy used includes palladium in an amount of 40-60% by weight and rhodium in an amount of 40-60% by weight, and that the precious metal alloy used may include gold, platinum, ruthenium and/or iridium in an amount of between greater than 0 and 10% by weight, or alternatively in an amount of between 2% by weight and 5% by weight, or alternatively in an amount of 3% by weight. The corresponding amount of rhodium and/or palladium is then replaced by the aforementioned secondary alloy components, wherein the amounts of rhodium and palladium as well as of the provided aforementioned secondary alloy components complement substantially to 100% by weight. ## Claims ### Claim 1 A precious metal alloy, comprising palladium and rhodium, for manufacturing jewelry pieces like jewelry, jewelry articles, bijouterie, watches, watch cases, writing utensils and/or a component thereof, the precious metal alloy comprising: a first alloy component comprising palladium in an amount of 40-60% by weight and rhodium in an amount of 47-53% by weight; a secondary alloy component comprising gold, platinum, ruthenium and/or iridium in an amount between greater than 0 to 10% by weight; wherein by the secondary alloy components the corresponding amount of first alloy components are replaced; and wherein the amounts of the first and secondary alloy components are substantially 100% by weight. ### Claim 2 (depends on 1) The precious metal alloy according to claim 1, wherein the secondary alloy component comprises gold, platinum, ruthenium and/or iridium in an amount between 2% by weight and 5% by weight. ### Claim 3 (depends on 1) The precious metal alloy according to claim 1, wherein the secondary alloy component comprises gold, platinum, ruthenium and/or iridium in an amount of 3% by weight. ### Claim 4 (depends on 1) The precious metal alloy according to claim 1, wherein the first alloy component comprises palladium in an amount of 50-52% by weight and rhodium in an amount of 48-50% by weight. ### Claim 5 (depends on 1) The precious metal alloy according to claim 1, wherein the first alloy component comprises palladium in an amount of 50% by weight and rhodium in an amount of 50% by weight. ### Claim 6 (depends on 1) The precious metal alloy according to claim 1, wherein the first alloy component comprises palladium in an amount of 47-50% by weight and rhodium in an amount of 50-53% by weight. ### Claim 7 (depends on 1) The precious metal alloy according to claim 1, wherein the first alloy component comprises palladium in an amount of 40% by weight. ### Claim 8 A precious metal alloy, comprising palladium and rhodium, for manufacturing jewelry pieces like jewelry, jewelry articles, bijouterie, watches, watch cases, writing utensils and/or a component thereof, the precious metal alloy comprising: a first alloy component comprising palladium in an amount of 47-53% by weight and rhodium in an amount of 47-53% by weight; a secondary alloy component comprising gold, platinum, ruthenium and/or iridium in an amount between greater than 0 to 10% by weight; wherein by the secondary alloy components the corresponding amount of first alloy components are replaced; and wherein the amounts of the first and secondary alloy components are substantially 100% by weight. ### Claim 9 (depends on 8) The precious metal alloy according to claim 8, wherein the secondary alloy component comprises gold, platinum, ruthenium and/or iridium in an amount between 2% by weight and 10% by weight. ### Claim 10 (depends on 8) The precious metal alloy according to claim 8, wherein the secondary alloy component comprises gold, platinum, ruthenium and/or iridium in an amount between 2% by weight and 5% by weight. ### Claim 11 A jewelry piece like jewelry, jewelry articles, bijouterie, watches, watch cases, writing utensils and/or a component thereof, wherein the jewelry piece is made of a precious metal, the precious metal alloy comprising: a first alloy component comprising palladium in an amount of 40-60% by weight and rhodium in an amount of 47-53% by weight; a secondary alloy component comprising gold, platinum, ruthenium and/or iridium in an amount between greater than 0 to 10% by weight; wherein by the secondary alloy components the corresponding amount of first alloy components are replaced; and wherein the amounts of the first and secondary alloy components are substantially 100% by weight. ### Claim 12 A jewelry piece like jewelry, jewelry articles, bijouterie, watches, watch cases, writing utensils and/or a component thereof, wherein the jewelry piece is made of a precious metal, the precious metal alloy comprising: a first alloy component comprising palladium in an amount of 47-53% by weight and rhodium in an amount of 47-53% by weight; a secondary alloy component comprising gold, platinum, ruthenium and/or iridium in an amount between greater than 0 to 10% by weight; wherein by the secondary alloy components the corresponding amount of first alloy components are replaced; and wherein the amounts of the first and secondary alloy components are substantially 100% by weight.