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. 05, 2009
Filed:
Aug. 08, 2006
Applicants:
Kunihiko Tokura, Tokyo, JP;
Toru Takebe, Tokyo, JP;
Masaru Uryu, Chiba, JP;
Takahisa Tagami, Kanagawa, JP;
Inventors:
Kunihiko Tokura, Tokyo, JP;
Toru Takebe, Tokyo, JP;
Masaru Uryu, Chiba, JP;
Takahisa Tagami, Kanagawa, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04R 7/02 (2006.01); G10K 13/00 (2006.01); H04R 7/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
Wholly aromatic polyamide fibers cut to a length of 0.5 to 5 mm are dispersedly contained in an injection-moldable thermoplastic resin, and the resin is molded by ultrahigh-speed thin-wall injection molding so as to produce a loudspeaker diaphragm in which the wholly aromatic polyamide fibers are dispersed in a direction perpendicular to the resin flow direction, whereby the loudspeaker diaphragm is improved in internal loss.