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:
Jan. 29, 2008
Filed:
Jul. 28, 2005
Mathias Boehmisch, Singen, DE;
Cornelius Haas, Daisendorf, DE;
Mathias Boehmisch, Singen, DE;
Cornelius Haas, Daisendorf, DE;
DaimlerChrysler AG, Stuttgart, DE;
Abstract
A test apparatus () is provided for examining sheet-like components (), in particular membrane electrode assemblies for use in a fuel cell, at least in sections and preferably continuously, for perforations (), which apparatus includes means () for applying a test gas () to one side of the sheet-like component, means () for emitting electromagnetic radiation () in a wavelength region adapted to the test gas (), which means are arranged on that side () of the sheet-like component () which is remote from the test gas (), and means () for detecting any electromagnetic radiation () which has been absorbed by the test gas () in a characteristic wavelength region, and a method for carrying out an examination of this type.