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:
May. 30, 2017
Filed:
Sep. 27, 2013
Applicant:
Snaptrack Inc., San Diego, CA (US);
Inventors:
Holger Emrich, Munich, DE;
Clemens Ruppel, Munich, DE;
Martin Störkle, Ebersberg, DE;
Werner Ruile, Munich, DE;
Thomas Finteis, Neubiberg, DE;
Tilo Gärtner, Munich, DE;
Ingo Bleyl, Munich, DE;
Markus Mayer, Taufkirchen, DE;
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03H 9/64 (2006.01); H03H 9/54 (2006.01); H03H 9/02 (2006.01); H03H 9/145 (2006.01);
U.S. Cl.
CPC ...
H03H 9/643 (2013.01); H03H 9/54 (2013.01); H03H 9/64 (2013.01); H03H 9/6406 (2013.01); H03H 9/02708 (2013.01); H03H 9/02716 (2013.01); H03H 9/02795 (2013.01); H03H 9/14558 (2013.01);
Abstract
An electroacoustic filter has improved low-pass characteristics. The filter includes a first electroacoustic converter, an electroacoustic element and a grid structure between the converter and the element. The grid structure is acoustically active in one frequency range that lies above the acoustically active frequency range of the first electroacoustic converter.