Patent · US Active

Metal plate

US11131035B2 · kind B2 · utility

0Cited by

14References

15Claims

0Family size

Assignee

Münze Österreich AG · AT

Inventors

Helmut Andexlinger · Wien, AT
Paul Fennes · St. Johann in Tirol, AT
Alfred Gnadenberger · Bischofshofen, AT
Robert Grill · Lechaschau, AT
Herbert Wähner · Pitten, AT
Heinz Waldhäusl · Karl, AT

Key dates

Filing date	Mar 5, 2018
Grant date	Sep 28, 2021
Priority date	—
Expiry date	Mar 12, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC25D11/26
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

The invention relates to a metal plate (1) for a coin (2), for a centre pill (3) of a coin (2) or for a ring (4) of a coin (2), where it is suggested that at least one subregion of a surface, on at least one side of the metal plate (1), has a dual-coloured optical element (5) and that said optical element (5) has at least one first region (6) with a first oxide layer (7) of one first colour which is an interference colour, and at least one second region (8) with a second colour, the first colour being different from the second colour.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.