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:
Jul. 04, 2000
Filed:
Nov. 02, 1998
Applicant:
Inventor:
Michael S Hsu, Lincoln, MA (US);
Assignee:
Ztek Corporation, Waltham, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01M / ; H01M / ; H01M / ; H01M / ; H01M / ;
U.S. Cl.
CPC ...
429 13 ; 429 16 ; 429 17 ; 429 20 ; 429 24 ; 429 31 ; 429 33 ;
Abstract
A system and method for producing electricity with a fuel cell power system. The power system includes an assembly of fuel cell stacks that operate at different temperatures, which vary between two or more of the fuel cell stacks. The fuel cell stack can have multiple temperature regions formed axially along the stack, or a plurality of spatially separated fuel cell stacks can be employed to heat a reactant from an input temperature to a desired temperature. The fuel cell stacks have operating temperatures in the range between about 20.degree. C. and about 2000.degree. C.