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. 21, 1976
Filed:
Sep. 26, 1975
Applicant:
Inventor:
Edgar Lawrence Eckfeldt, Ambler, PA (US);
Assignee:
Leeds & Northrup Company, North Wales, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01N / ; G02B / ;
U.S. Cl.
CPC ...
2325 / ; 350 / ; 350 / ; 356209 ;
Abstract
A spectrochemical analyzer utilizing a transparent medium such as quartz which has a color reagent coating the surface. When light is directed into the transparent medium, the magnitude of internal surface reflection varies with the change in absorptivity resulting from a color change in the reagent in response to a change in the chemical condition of the sample. By measurement of the light transmitted by the transparent medium the chemical condition of the sample is measured.