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:
Aug. 27, 2019
Filed:
Nov. 17, 2015
Applicant:
Tesa SE, Norderstedt, DE;
Inventors:
Michael Egger, Hamburg, DE;
Gero Maatz, Hamburg, DE;
Assignee:
TESA SE, Norderstedt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 7/10 (2006.01); H04R 7/06 (2006.01); B32B 7/12 (2006.01); H04R 7/02 (2006.01); B32B 27/08 (2006.01); B32B 27/28 (2006.01); B32B 27/32 (2006.01); B32B 27/40 (2006.01);
U.S. Cl.
CPC ...
H04R 7/10 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/285 (2013.01); B32B 27/286 (2013.01); B32B 27/288 (2013.01); B32B 27/32 (2013.01); B32B 27/40 (2013.01); H04R 7/02 (2013.01); H04R 7/06 (2013.01); B32B 2250/24 (2013.01); B32B 2255/10 (2013.01); B32B 2255/26 (2013.01); B32B 2307/10 (2013.01); B32B 2307/546 (2013.01); B32B 2307/56 (2013.01); B32B 2307/732 (2013.01); B32B 2307/738 (2013.01); B32B 2457/00 (2013.01); F16C 2208/52 (2013.01); H04R 2307/025 (2013.01); H04R 2499/11 (2013.01);
Abstract
Multi-layer composites and methods of using the composites as a membrane for electroacoustic transducers. The composites and methods comprise at least one first and one second outer layer, wherein at least one of the cover layers being made from a polypropylene sulfide-plastic having a halogen content not exceeding 550 ppm.