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:
Mar. 20, 2018
Filed:
Oct. 29, 2014
Applicant:
Airbus Operations Limited, Bristol, GB;
Inventors:
Franklin Tichborne, Bristol, GB;
Joseph K-W Lam, Bristol, GB;
Assignee:
AIRBUS OPERATIONS LIMITED, Bristol, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 23/26 (2006.01); H01G 11/36 (2013.01);
U.S. Cl.
CPC ...
G01F 23/266 (2013.01); G01F 23/263 (2013.01); G01F 23/268 (2013.01); H01G 11/36 (2013.01); Y10T 137/6855 (2015.04);
Abstract
A sensor for measuring a level of a liquid such as fuel and/or water in a tank such as a fuel tank. The sensor includes a stack of capacitors, each capacitor with one or more graphene measurement electrodes and one or more graphene reference electrodes. A measurement system is arranged to measure a capacitance of each capacitor between its measurement electrode(s) and its reference electrode(s) and thereby infer the liquid level. The graphene measurement and reference electrodes are formed in a single layer of graphene oxide by reductive etching.