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:
Oct. 30, 2012
Filed:
Feb. 20, 2008
Applicants:
Toru Takebe, Tokyo, JP;
Kunihiko Tokura, Tokyo, JP;
Masaru Uryu, Chiba, JP;
Takahisa Tagami, Kanagawa, JP;
Emiko Ikeda, Tokyo, JP;
Inventors:
Toru Takebe, Tokyo, JP;
Kunihiko Tokura, Tokyo, JP;
Masaru Uryu, Chiba, JP;
Takahisa Tagami, Kanagawa, JP;
Emiko Ikeda, Tokyo, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01); H04R 9/06 (2006.01); H04R 11/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A speaker diaphragm includes a thermoplastic resin having a three-layer structure. The three-layer structure includes a polyester film as a base material of the three-layer structure, a polyimide-based resin layer as a top layer of the three-layer structure, and another polyimide-based resin layer as a bottom layer of the three-layer structure.