Apparatus and method for determining the proportion of a substance in a gas sample using an infrared measuring instrument

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7268352
APP PUB NO 20050274893A1
SERIAL NO

11141112

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The invention relates to an apparatus and a method for improved correction of drift in an infrared measuring instrument. The measurement signal furnished by a thermal detector is split into a direct voltage component and an alternating voltage component. By means of calibration curves (24, 27), a calculated comparison variable ##EQU00001## is formed from a measured, averaged concentration value ##EQU00002## The correction value .DELTA.T for the drift correction is obtained from the difference between the corresponding measured size of the direct voltage component ##EQU00003## and the comparison variable ##EQU00004##

First Claim

See full text

Other Claims data not available

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
DRAGERWERK AKTIENGESELLSCHAFTMOISLINGER ALLEE 53-55 D-23542 LUBECK

International Classification(s)

loading....
  • 2005 Application Filing Year
  • H02H Class
  • 766 Applications Filed
  • 373 Patents Issued To-Date
  • 48.70 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances20052006200720082009201020112012201320142015201620170255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Behring, Rasmus Lubeck, DE 2 12
Dicks, Bernd-Michael Ratekau, DE 9 22
Dreyer, Peter Pansdorf, DE 21 145
Hattendorff, Horst-Dieter Bad Schwartau, DE 6 70
Matthiessen, Hans Bad Schwartau, DE 30 566

Cited Art Landscape

Load Citation

Patent Citation Ranking

  • 0 Citation Count
  • H02H Class
  • 0 % this patent is cited more than
  • 18 Age
Citation count rangeNumber of patents cited in rangeNumber of patents cited in various citation count ranges3115402014564521101 - 1011 - 2021 - 3031 - 4041 - 5051 - 6061 - 7071 - 8081 - 9091 - 100100 +05101520253035404550556065707580859095100105110115120125

Forward Cite Landscape

Load Citation