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:
Dec. 20, 1988
Filed:
Nov. 24, 1987
Applicant:
Inventor:
John I Peterson, Falls Church, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
2504581 ; 250227 ; 356417 ;
Abstract
A method for correcting common path variations in intensity in fiber optic chemical sensing devices uses a device for spatially separating light of different wavelength regions and a dye system selected so that light passing back to a measuring system along the fiber optic sensor consists of two wavelength regions. The first wavelength region varies with the concentration of analyte, and the other wavelength region is insensitive to the concentration of analyte.