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:
Jun. 18, 2019
Filed:
Jan. 15, 2018
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventor:
Hidetoshi Hiraoka, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04R 31/00 (2006.01); H04R 9/06 (2006.01); H04R 9/02 (2006.01); H04R 1/28 (2006.01); H04R 7/18 (2006.01); H04R 7/12 (2006.01);
U.S. Cl.
CPC ...
H04R 31/003 (2013.01); H04R 1/288 (2013.01); H04R 7/125 (2013.01); H04R 7/18 (2013.01); H04R 9/02 (2013.01); H04R 9/025 (2013.01); H04R 9/06 (2013.01); H04R 2307/021 (2013.01); H04R 2307/029 (2013.01); H04R 2400/11 (2013.01);
Abstract
A loudspeaker diaphragm includes a base layer and a coating layer. The base layer contains natural fibers. The coating layer is formed on at least one of surfaces of the base layer. The coating layer is composed of chitin nanofibers each having a higher elastic modulus than that of the base layer.