Patent · US Active

Composite glass with an intermediate film that changes colour depending on the viewing angle

US11745474B2 · kind B2 · utility

0Cited by

2References

24Claims

0Family size

Assignee

GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH · DE

Inventors

Maik Rudolf Johann SCHERER · Grainau, DE
Raphael Dehmel · Neubeuern, DE
Kai Herrmann SCHERER · Munich, DE
Daniel Lenssen · Munich, DE
Michael Rahm · Bad Tölz, DE
Mario Keller · Bad Endorf, DE

Key dates

Filing date	Sep 2, 2019
Grant date	Sep 5, 2023
Priority date	—
Expiry date	Mar 17, 2040

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB32B2307/42
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

A composite glass comprises two glass and/or plastic plates and an intermediate foil arranged between the glass and/or plastic plates. The composite glass, due to the intermediate foil, is configured differently in a side-dependent manner, by appearing to a viewer more transparent from an inner side than from an outer side. The composite glass, due to the intermediate foil, appears to the viewer different in a viewing angle-dependent manner from the outer side.

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