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:
Mar. 31, 2015
Filed:
Sep. 19, 2013
Applicant:
Commissariat À L'énergie Atomique ET Aux Énergies Alternatives, Paris, FR;
Inventors:
Serge Gidon, La Murette, FR;
Pierre Gidon, Echirolles, FR;
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
G01N 21/00 (2006.01); G01N 21/61 (2006.01); G01N 21/31 (2006.01); G01N 21/359 (2014.01);
U.S. Cl.
CPC ...
G01N 21/61 (2013.01); G01N 21/314 (2013.01); G01N 21/359 (2013.01);
Abstract
A gas detector including an assembly of two hemispherical caps having opposite concavities, and which are reflective on at least a portion of their opposite surfaces, and a wafer arranged in an equatorial plane of the assembly of the two caps, in the vicinity of but spaced apart from the center of the equatorial plane, including, back-to-back: a diverging light emitter directed towards the first cap and a light receiver directed towards the second cap.