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:
Jul. 21, 2015
Filed:
Jan. 21, 2015
Applicant:
Doppler Labs, Inc., New York, NY (US);
Inventors:
Noah Kraft, Brooklyn, NY (US);
Richard Fritz Lanman, New York, NY (US);
Dan Wiggins, Montecito, CA (US);
Jonathan Oswaks, Thousand Oaks, CA (US);
Nils Jacob Palmborg, Brooklyn, NY (US);
Assignee:
Doppler Labs, Inc., New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/40 (2006.01); G10K 11/16 (2006.01); G10L 21/0232 (2013.01); G10L 21/0208 (2013.01); H03G 3/32 (2006.01); H04R 1/22 (2006.01); H04R 1/10 (2006.01); H03G 9/02 (2006.01); H03G 5/16 (2006.01);
U.S. Cl.
CPC ...
G10K 11/16 (2013.01); G10L 21/0208 (2013.01); G10L 21/0232 (2013.01); H03G 3/32 (2013.01); H03G 5/165 (2013.01); H03G 9/025 (2013.01); H04R 1/1083 (2013.01); H04R 1/22 (2013.01);
Abstract
There is disclosed a passive acoustical filter including a first filter element coupled between an ambient and an ear of a listener, at least a portion of the first filter element filled with a material in which a speed of sound is lower than a speed of sound in air.