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:
Dec. 19, 2006
Filed:
Mar. 21, 2005
Applicants:
Frank S. Krufka, Kirkwood, PA (US);
Joson Kunnumpuram Joseph, Bear, DE (US);
Arnold Lloyd Lewis, Bear, DE (US);
Inventors:
Frank S. Krufka, Kirkwood, PA (US);
Joson Kunnumpuram Joseph, Bear, DE (US);
Arnold Lloyd Lewis, Bear, DE (US);
Assignee:
Dade Behring Inc., Deerfield, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01F 23/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
A liquid level sensor confirms actual physical contact between a probe and a liquid by verifying that any change in capacitance of the sensor is constant over a given time period and thereby is not caused by spurious electrical disturbances or other measuring irregularities.