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. 27, 2017
Filed:
Nov. 27, 2014
Applicant:
Tesa SE, Norderstedt, DE;
Inventors:
Nicolai Böhm, Hamburg, DE;
Michael Egger, Hamburg, DE;
Mark Hänle, Hamburg, DE;
Alexander Herrmann, Hamburg, DE;
Bernhard Müssig, Seevetal, DE;
Andreas Westphal, Neu Wulmstorf, DE;
Falk Hunger, Lüneburg, DE;
Gero Maatz, Hamburg, DE;
Assignee:
TESA SE, Norderstedt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 7/10 (2006.01); H04R 31/00 (2006.01);
U.S. Cl.
CPC ...
H04R 7/10 (2013.01); H04R 31/003 (2013.01); H04R 2307/025 (2013.01);
Abstract
The invention relates to a multi-layer composite for the production of membranes for electroacoustic transducers, comprising a first and second cover layer, a first and second damping layer and a separating layer, the first and the second damping layer consisting of adhesive compositions the respective glass transition temperatures TG (DSC) of which differ by at least 10 K.