Patent · US Active

Coloured stove sightglass with colour-neutral transmission characteristics

US11059739B2 · kind B2 · utility

12Cited by

21References

18Claims

0Family size

Assignee

Schott AG · DE

Inventors

Matthias Wolfinger · Kriftel, DE
Falk Gabel · Schlangenbad, DE
Friedrich Siebers · Nierstein, DE
Evelin Weiss · Mainz, DE
Matthias Bockmeyer · Mainz, DE
Oliver Hochrein · Mainz, DE

Key dates

Filing date	Dec 21, 2018
Grant date	Jul 13, 2021
Priority date	—
Expiry date	Dec 21, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH05B3/74
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A sightglass for a stove is provided that has a substrate made of transparent coloured lithium aluminium silicate glass ceramic. The sightglass has a light transmittance of 0.1% to 50%. Standard illuminant D65 light, after passing through the glass ceramic, at a thickness of 4 mm, has a colour locus in the white region W1 determined by the following coordinates in the chromaticity diagram CIExyY-2°:

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