The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 21, 2026
Filed:
Aug. 27, 2021
Applicant:
Siemens Aktiengesellschaft, Munich, DE;
Inventors:
Camiel Heffels, Stutensee-Büchig, DE;
Konstantin Harr, Karlsruhe, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/65 (2006.01); F23N 5/00 (2006.01);
U.S. Cl.
CPC ...
G01N 21/65 (2013.01); F23N 5/003 (2013.01); F23N 2221/10 (2020.01);
Abstract
The gross or net calorific value of a hydrocarbon-containing fuel gas is determined by using a Raman photometer. A Raman radiation obtained following interaction of laser light with the fuel gas is limited by a bandpass filter to a wavenumber range of the C—H stretching vibrations of the hydrocarbons contained in the fuel gas around 2900 cmand is supplied to a photomultiplier and integratively detected by the photomultiplier. The gross or net calorific value is determined from the output signal of the photomultiplier.