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:
Sep. 19, 2017
Filed:
May. 28, 2013
Applicant:
Oxsensis Ltd, Chilton, Didcot, GB;
Inventor:
Ralf-Dieter Pechstedt, Didcot, GB;
Assignee:
Oxsensis Limited, Didcot, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 21/41 (2006.01); G01N 21/45 (2006.01); G01K 11/32 (2006.01); G01F 23/292 (2006.01); G01L 9/00 (2006.01); G01L 11/02 (2006.01); G01N 33/00 (2006.01); G01N 33/18 (2006.01); G01N 33/22 (2006.01);
U.S. Cl.
CPC ...
G01N 21/45 (2013.01); G01F 23/292 (2013.01); G01K 11/3206 (2013.01); G01L 9/0079 (2013.01); G01L 11/02 (2013.01); G01N 33/0004 (2013.01); G01N 33/18 (2013.01); G01N 33/22 (2013.01);
Abstract
An optical sensor is described for distinguishing between liquids of different refractive index, through strength of interference caused by an optical cavity having an exposed optical boundary in contact with such liquids. The sensor may be used, for example, to distinguish between water and aviation fuel in an aircraft fuel tank.