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:
Sep. 01, 2009
Filed:
Jan. 23, 2006
Applicants:
Takashi Suzuki, Mie, JP;
Shinya Mizone, Mie, JP;
Inventors:
Takashi Suzuki, Mie, JP;
Shinya Mizone, Mie, JP;
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a process for producing a loudspeaker diaphragm, pulp is deposited on a paper-making mold in the presence of vortex stream of water having pulp dispersed therein in a paper-making bath. Pulp is deposited on the paper-making mold while at least the water having pulp dispersed therein is rotated by the vortex stream in the paper-making bath. Consequently, variation of pulp fiber orientation is suppressed, and a loudspeaker diaphragm with high reproducibility and stable quality is produced with a high productivity.