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:
Apr. 07, 2026
Filed:
Dec. 03, 2020
Friedrich-schiller-universitaet Jena, Jena, DE;
Patrick Bräutigam, Jena, DE;
Sascha Raufeisen, Berlin, DE;
Michael Stelter, Chemnitz, DE;
Samira Lambertz, Jena, DE;
FRIEDRICH-SCHILLER-UNIVERSITAET JENA, Jena, DE;
Abstract
The present invention relates to a method and a device for the chemical-free determination of the chemical oxygen demand (CODs) in aqueous samples. The object of the invention, to develop a method that compensates for the disadvantages of the standard method and at the same time is at least as good as this, in that it can determine the COD quickly and with a high measurement frequency without chemicals and is cheap and has a low personnel requirement and should be simple to automate, is achieved in that the chemical oxygen demand of aqueous samples is determined by non-specific oxidation of water components at an electrode (), assisted by (ultra)sound from a sound source () in a frequency range in which no significant quantities of oxidative species are formed, i.e. below the cavitation threshold.