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:
Jan. 15, 2013
Filed:
Jul. 08, 2008
Applicants:
Makoto Takahashi, Osaka, JP;
Masaya Nakatani, Hyogo, JP;
Hiroshi Ushio, Osaka, JP;
Inventors:
Assignee:
Panasonic Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 27/327 (2006.01);
U.S. Cl.
CPC ...
Abstract
A sensor includes a diaphragm having a through-hole (), and includes a frame supporting a diaphragm and having a cavity. Kerfs are formed in a frame so as to extend from an end surface of the frame, and the wall surfaces of the kerfs are made hydrophilic. This structure can suppress the occurrence of bubbles in the vicinity of the through-hole, and efficiently remove the remaining bubbles. As a result, the bubbles adhering to the vicinity of the through-hole can be removed, and the measuring reliability of the sensor can be improved.