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. 27, 2025
Filed:
Mar. 13, 2019
Presens Precision Sensing Gmbh, Regensburg, DE;
Gregor Liebsch, Obertraubling, DE;
Achim Stangelmayer, Neuburg an der Donau, DE;
Robert Meier, Nittendorf, DE;
PRESENS PRECISION SENSING GMBH, Regensburg, DE;
Abstract
A method and an arrangement, for detecting microorganisms on a surface are disclosed. At least a portion of the surface is covered with a sensor foil in an airtight manner. An oxygen-permeable layer of the sensor foil is doped with an oxygen indicator dye, loaded with oxygen and faces the at least one portion of the surface. An excitation light passes through an oxygen-impermeable at least partially transparent read-out carrier layer of the foil to the dye in the oxygen-permeable layer which is then excited by the excitation light. An emission of the oxygen indicator dye) transmitted through the carrier layer is detected by a detection element over or after a period of time (t). The emission of the oxygen indicator dye from the oxygen-permeable layer is indicative of the amount of oxygen consumed by microorganisms from the oxygen-permeable layer covering the at least one portion of the surface.