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. 29, 2013
Filed:
Dec. 19, 2008
Véronique Poulain, Mons, BE;
Sophie Schuurman, Céroux-Mousty, BE;
André Lannoo, Linden, BE;
Frans F. Westendorp, Epse, NL;
Véronique Poulain, Mons, BE;
Sophie Schuurman, Céroux-Mousty, BE;
André Lannoo, Linden, BE;
Frans F. Westendorp, Epse, NL;
Vishay Resistors Belgium BVBA, Brussels (Evere), BE;
Abstract
A thermistor based on a composition having the general formula (I): ReCrMnMEOwherein Re is a rare earth metal or a mixture of two or more rare earth metals, M is a metal selected from the group consisting of nickel, cobalt, copper, magnesium and mixtures thereof, E is a metal selected from the group consisting of calcium, strontium, barium and mixtures thereof, x is the sum of a+b+c and is a number between 0.1 and 1, and the relative ratio of the molar fractions a, b and c is in an area bounded by points A, B, C and D in a ternary diagram, wherein point A is, if y<0.006, at (Cr=0.00, Mn=0.93+10−y, M=0.07−10−y), and, if y≧0.006, at (Cr=0−00, Mn=0.99, M=0.01), point B is, if y<0.006, at (Cr=0.83, Mn=0.10+10−y, M=0.07−10−y), and, if y≧0.006, at (Cr=0.83, Mn=0.16, M=0.01), point C is at (Cr=0.50, Mn=0.10, M=0.40) and point D is at (Cr=0.00, Mn=0.51, M=0.49), y is a number between 0 and 0.5−x, and z is a number between 2.5 and 3.5.