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:
Oct. 28, 1997
Filed:
May. 10, 1996
Applicant:
Inventor:
Bertrand Seigeot, Dingy Saint Clair, FR;
Assignee:
Alcatel Cit, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 407 ;
Abstract
A tracer gas leak detector includes a mass spectrometer delivering a signal q proportional to the partial pressure of the tracer gas in the spectrometer, wherein the detector further includes apparatus for obtaining from the signal q a signal ##EQU1## where A is an adjustable amplifier coefficient and dq/dt is the time derivative of the signal q, and apparatus for obtaining an output signal referred to as the processed signal of the form q.sub.t =q+q'.