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:
Mar. 22, 2005
Filed:
Jul. 16, 2003
Ronald J. Kelley, Coral Springs, FL (US);
Sivakumar Muthuswamy, Plantation, FL (US);
Steven D. Pratt, Plantation, FL (US);
Robert W. Pennisi, Boca Raton, FL (US);
Ronald J. Kelley, Coral Springs, FL (US);
Sivakumar Muthuswamy, Plantation, FL (US);
Steven D. Pratt, Plantation, FL (US);
Robert W. Pennisi, Boca Raton, FL (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A small fuel cell () powers a portable electronic device () and contains a fuel reservoir () and a device () that measures the amount of liquid fuel () that is in the reservoir. The fuel cell operates on hydrogen that is obtained from a liquid hydrocarbon fuel, such as alcohol or other hydrocarbons. The liquid fuel is typically converted into hydrogen by a reforming process. The reservoir that is connected to the fuel cell has an indicia () that is readable by a human user of the portable electronic device, for measuring the amount of liquid hydrocarbon fuel that is present in the reservoir. Typically, the indicia consist of a sight glass, a capacitive element, a resistive element, a transparent portion of the reservoir, a float, or an acoustic transmitter coupled with an acoustic receiver.