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:
Apr. 30, 2024
Filed:
May. 05, 2021
Applicant:
Yamaha Corporation, Hamamatsu, JP;
Inventors:
Assignee:
Yamaha Corporation, Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 7/12 (2006.01); B32B 27/06 (2006.01); B32B 27/32 (2006.01); H04R 31/00 (2006.01);
U.S. Cl.
CPC ...
H04R 7/122 (2013.01); B32B 27/06 (2013.01); B32B 27/32 (2013.01); H04R 31/003 (2013.01); B32B 2250/03 (2013.01); B32B 2250/40 (2013.01); B32B 2270/00 (2013.01); H04R 2307/025 (2013.01);
Abstract
A speaker diaphragm includes a first polymer and a second polymer. The first polymer and the second polymer undergo phase separation. The first polymer is a polyolefin, and the second polymer is a thermoplastic resin being immiscible with the polyolefin. One of either the polyolefin or the thermoplastic resin constitutes a sea phase, and another one of either the polyolefin or the thermoplastic resin constitutes island phases being interspersed in the sea phase.