Invention Grant
- Patent Title: Method of marking laminated jewelry
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Application No.: US15608771Application Date: 2017-05-30
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Publication No.: US10994570B2Publication Date: 2021-05-04
- Inventor: Yianni Melas
- Applicant: Yianni Melas
- Applicant Address: US NY New York
- Assignee: Yianni Melas
- Current Assignee: Yianni Melas
- Current Assignee Address: US NY New York
- Agency: Nolte Lackenbach Siegel
- Main IPC: B32B15/01
- IPC: B32B15/01 ; B44C1/22 ; B44C3/00 ; B44C1/00 ; A44C27/00 ; B23K26/361

Abstract:
A method to permanently mark an item of laminated jewelry involves creating a laminate of two metals, and upper layer typically formed of a more precious metal such as gold, platinum or palladium that do not readily oxidize laminated onto the surface of a less precious metal, such as silver, which can be oxidized to create a dark color (e.g. black). A laser is used to create characters and/or designs in the upper layer by vaporizing portions thereof to effectively remove those portions. This exposes the upper surface of the less precious metal that does become oxidized. An oxidizer, such as liquid sulfur, is then used to blacken the silver, typically a dark gray. However, if more contrast is needed by making the marked text, designs etc. darker than gray a second step can be used by applying an additional oxidizing agent to turn the dark gray to substantially black.
Public/Granted literature
- US20170341461A1 METHOD OF MARKING LAMINATED JEWELRY Public/Granted day:2017-11-30
Information query