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:
Mar. 01, 2016
Filed:
Aug. 07, 2014
Applicant:
Panasonic Corporation, Osaka, JP;
Inventors:
Mitsukazu Kuze, Mie, JP;
Satoshi Koura, Mie, JP;
Shinya Mizone, Hyogo, JP;
Goro Tsuchiya, Mie, JP;
Tetsushi Itano, Mie, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/00 (2006.01); H04R 1/00 (2006.01); H04R 9/02 (2006.01); H04R 15/00 (2006.01);
U.S. Cl.
CPC ...
H04R 1/00 (2013.01); H04R 9/025 (2013.01); H04R 15/00 (2013.01); H04R 2209/024 (2013.01);
Abstract
The loudspeaker magnetic circuit is an external-magnet type, and has a magnet, an upper plate, and a lower plate. The magnet is sandwiched between the upper plate and the lower plate. At least one of the lower plate and the upper plate is formed of magnetic powder or a mixture of a magnetic powder and resin.