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:
Jun. 02, 2009
Filed:
Sep. 24, 2004
Rik W. DE Doncker, Leuven, BE;
Abderrezak Hammouche, Aachen, DE;
Eckhard Karden, Aachen, DE;
Birger Fricke, Aachen, DE;
Rik W. De Doncker, Leuven, BE;
Abderrezak Hammouche, Aachen, DE;
Eckhard Karden, Aachen, DE;
Birger Fricke, Aachen, DE;
Abstract
A method and device for determining the charge of a battery, characterized in that a gain crossover frequency (f) for an impedance of the battery excited by an alternating current signal is established, and the gain crossover frequency (f) is assigned to the charge of the battery, whereby the gain crossover frequency (f) is a frequency of the alternating current signal at which an imaginary portion of the impedance of the battery vanishes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile