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:
Jan. 07, 2014
Filed:
Nov. 25, 2009
Applicants:
Rolf Eckhardt, Alzenau, DE;
Ralf Warratz, Bonn, DE;
Inventors:
Rolf Eckhardt, Alzenau, DE;
Ralf Warratz, Bonn, DE;
Assignee:
MSA Auer GmbH, Berlin, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/413 (2006.01);
U.S. Cl.
CPC ...
Abstract
An electrochemical gas sensor includes an ionic liquid as electrolyte. The ionic liquid includes at least one cation selected from the group of a monoalkylammonium cation, a dialkylammonium cation, and a trialkylammonium cation. The individual alkyl groups of the cation can be branched or unbranched and have 1 to 4 carbon atoms. The individual alkyl groups of the cation can be the same or different in case of the dialkylammonium cation and the trialkylammonium cation. In a number of embodiments, the individual alkyl groups have 2 to 4 carbon atoms.