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:
Jan. 16, 2024
Filed:
Dec. 03, 2020
Applicant:
Commissariat À L'energie Atomique ET Aux Energies Alternatives, Paris, FR;
Inventors:
Salim Boutami, Grenoble, FR;
Maryse Fournier, Grenoble, FR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/17 (2006.01); G01N 21/3504 (2014.01); G01N 29/24 (2006.01); G01N 29/036 (2006.01);
U.S. Cl.
CPC ...
G01N 21/1702 (2013.01); G01N 21/3504 (2013.01); G01N 29/036 (2013.01); G01N 29/2425 (2013.01); G01N 2021/1704 (2013.01);
Abstract
A device for the photoacoustic characterisation of a gaseous substance, includes a chamber intended to contain the gaseous substance to characterise and into which a light beam is injected. The chamber is delimited, inter alia, by an inner face, on which a part of the light beam is reflected. This inner face is etched so as to have recesses, each recess being delimited laterally by a lateral surface of which a part at least is tilted, with respect to an average plane of the inner face, by a given tilt angle (α).