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:
Apr. 15, 2014
Filed:
Jan. 28, 2010
Applicants:
Kerstin Metzler, Chène-Bourg, CH;
Bernhard Müssig, Seevetal, DE;
Frank Virus, Hamburg, DE;
Inventors:
Assignee:
tesa SE, Hamburg, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G10K 13/00 (2006.01); C08G 63/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
Deep-drawn membranes formed of polyester or polycarbonate films, comprising units of Formula (I) and (II), useful for acoustic signal converters as microphones and speakers. The film can be produced by thermoplastic processes or solvent cast processes. Especially suitable for the production of small membranes with a diameter of up to 10 cm useful in mobile devices as microphones, mobile telephones, laptops, personal digital assistants (PDAs), headphones or as signal transmitters