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:
Jul. 22, 2008
Filed:
Aug. 10, 2007
Applicant:
Noriaki Ozawa, Matsumoto, JP;
Inventor:
Noriaki Ozawa, Matsumoto, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B 19/00 (2006.01); G04B 21/00 (2006.01); G04B 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A timepiece having an external case, a sound source disposed inside the external case, an internal filter that is gas permeable and waterproof and is disposed opposite with a gap to the external case and the sound source, and a communication opening that communicates the space between the external case and the internal filter with the outside. The internal filter is a porous thin film that has a large number of small holes and assures waterproofness preventing water from passing the small holes for at least ten minutes when in contact with water at normal pressure.