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:
May. 07, 2019
Filed:
Jun. 24, 2016
Fresenius Medical Care Holdings, Inc., Waltham, MA (US);
Louis L. Barrett, West Point, UT (US);
Fresenius Medical Care Holdings, Inc., Waltham, MA (US);
Abstract
An embodiment of the disclosure provides a system for determining information on one or more constituents in a medium. The system includes N light emitters L. . . L, wherein each light emitter Lprovides an amplitude modulated (AM) light at modulation frequency finto a flow path of the medium from one side of a containment vessel for the medium. The system further includes a photodetector, for receiving the AM light from each light emitter after it passes through the flow path of the medium, and converting the AM light to an electrical signal characterized by a summation of frequency components from each modulation frequency f. The system further includes one or more measuring circuits providing information about a concentration of one or more constituents in the medium determined from log ratios of a pair of amplitudes of fand ffrequency components in the electrical signal.