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:
Jul. 03, 2018
Filed:
Jan. 23, 2014
Basf SE, Ludwigshafen, DE;
Jürgen Wortmann, Limburgerhof, DE;
Michael Lutz, Speyer, DE;
Johan ter Maat, Mannheim, DE;
Kerstin Schierle-Arndt, Zwingenberg, DE;
Stephan Maurer, Neustadt, DE;
Michael Ladenberger, Darstein, DE;
Florian Garlichs, Neustadt, DE;
Katharina Kaleta, Heidelberg, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
Method of maintaining or widening the long-term operating temperature range of a heat transfer medium and/or heat storage medium comprising a nitrate salt composition selected from the group consisting of alkali metal nitrate and alkaline earth metal nitrate and optionally alkali metal nitrite and alkaline earth metal nitrite, wherein the nitrate salt composition is brought into contact with an additive comprising the components nitric acid and/or nitrous acid and oxygen-comprising gas having an oxygen partial pressure which is equal to or greater than that in air and/or oxygen-generating compounds and optionally nitrogen oxides and/or compounds which generate further nitrogen oxide.