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. 18, 2008
Filed:
Jun. 25, 2002
Josef Polak, Bodenheim, DE;
Christoph Freist, Bielefeld, DE;
Gerd Mannebach, Worms-Abenheim, DE;
Ernst Hotz, Schönau, DE;
Joachim Oster, Niedernhausen, DE;
Josef Polak, Bodenheim, DE;
Christoph Freist, Bielefeld, DE;
Gerd Mannebach, Worms-Abenheim, DE;
Ernst Hotz, Schönau, DE;
Joachim Oster, Niedernhausen, DE;
CWW-Gerko Akustik GmbH, Worms, DE;
Abstract
A bitumen film containing magnetic powder is heated prior to magnetization to a temperature enabling the magnetic powder particles to be oriented according to the effect of the magnetic field. The bitumen film is sufficiently cooled after magnetization in order to preserve the magnetization, whereby the orientation of the magnetic powder particles, which is adjusted during magnetization, is maintained.