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:
Oct. 06, 1998
Filed:
Feb. 29, 1996
Michael Francis Carolan, Allentown, PA (US);
Paul Nigel Dyer, Allentown, PA (US);
Stephen Andrew Motika, Kutztown, PA (US);
Air Products and Chemicals, Inc., Allentown, PA (US);
Abstract
The present invention presents a new class of multicomponent metallic oxides which are particularly suited toward use in fabricating component used in solid-state oxygen separation devices. The compositions of the present invention are represented by the formula Ln.sub.x A'.sub.x ' Co.sub.y Fe.sub.y' Cu.sub.y' O.sub.3-z wherein Ln is an element selected from the f block lanthanides as represented by the IUPAC periodic table of the elements, A' is selected from strontium or calcium, x>0, y>0, y'>0, x +x'=1, y +y'+y'=1, 0.ltoreq.y'<0.4 and z is a number which renders the composition of matter charge neutral. These compositions provide a favorable balance of oxygen permeance, resistance of degradation when employed in such devices under high oxygen partial pressures and possess coefficients of thermal expansion which are compatible with other materials used to fabricate such devices.