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. 24, 1996
Filed:
Dec. 17, 1993
Applicant:
Inventors:
Richard Spaeh, Ueberlingen, DE;
Wolfgang Schaefer, Friedrichshafen, DE;
Detlef Stolten, Uhldingen, DE;
Marco Fandel, Immentaad, DE;
Assignee:
Dornier GmbH, Immenstaad, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ;
U.S. Cl.
CPC ...
429 33 ; 429 34 ;
Abstract
Electrically insulating ceramic gas supply plenums for solid electrolyte fuel cells in which the plenums are formed from a mixture of ceramic components and the proportions of the components in the mixture are adjusted to match the coefficient of thermal expansion of the plenum to that of the solid electrolyte. A preferred ceramic is formed from a mixture of MgO and Al.sub.2 O.sub.3 having a MgO/Al.sub.2 O.sub.3 molar ratio of from 1:1 and 7:1.