Patent · US Expired

Emission spectrometer having a charge coupled device detector

US6594010B2 · kind B2 · utility

5Cited by

5References

35Claims

0Family size

Assignee

Praxair Technology, Inc. · US

Inventors

Mark Leonard Malczewski · Tonawanda, US
Joseph S. Wegrzyn · Stratford, US
Wayne D. Martin · North Tonawanda, US

Key dates

Filing date	Jul 6, 2001
Grant date	Jul 15, 2003
Priority date	—
Expiry date	Jan 9, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01J3/443
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An analyzer suitable for performing continuous gas analysis in ultra-high purity applications. The analyzer combines a low-level emission source and a gaseous emission spectrometer having a charge coupled device (CCD) diode array as a detector. The CCD detector replaces one or more photomultipliers and narrow bandpass filters typically used in spectrometers. The analyzer performs various processing operations to evaluate and eliminate the effect of background light level, or dark spectrum.

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