Patent · US Active

Gas concentration measuring apparatus

US7705991B2 · kind B2 · utility

2Cited by

5References

6Claims

0Family size

Assignee

Draeger Medical AG & Co. KG · DE

Inventors

Ralf Doring · Heiligenhaus, DE
Andreas Gerk · Bad Schwartau, DE
Günter Steinert · Ondernemingsweg, DZ
Peter Drever · Bad Schwartau, DE

Key dates

Filing date	Sep 24, 2007
Grant date	Apr 27, 2010
Priority date	—
Expiry date	Feb 18, 2028

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/3133
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A gas concentration measuring apparatus is in miniaturized form and permits the measurement of anesthetic gas components. A variable interferometer is provided on the basis of a Fabry Perot interferometer (1) wherein the mirrors (2, 3) can be changed in spacing with respect to each other. The mirrors (2, 3) have coatings which make possible the transmission in two spectral ranges (Δλ1, Δλ2).

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