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. 25, 2021
Filed:
Aug. 28, 2019
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventors:
Satomi Yoshioka, Nagano, JP;
Hisashi Koike, Nagano, JP;
Nobutaka Urano, Nagano, JP;
Tsukasa Ota, Yamanashi, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 31/00 (2006.01); H04R 9/06 (2006.01); H04R 7/18 (2006.01); H04R 9/04 (2006.01);
U.S. Cl.
CPC ...
H04R 31/003 (2013.01); H04R 7/18 (2013.01); H04R 9/045 (2013.01); H04R 9/06 (2013.01); H04R 2307/029 (2013.01);
Abstract
A speaker diaphragm includes a cone formed of a first material including first fibers derived from a plant and a first resin for binding the first fibers together, and an edge portion which is positioned at an outer peripheral portion of the cone and formed of a second material including a second resin, in which the cone and the edge portion are integrally formed. In addition, at least one of the content and the composition of the first resin and the second resin is different.