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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.:

US 10729993 B1

PDFFull Text
Date of Patent:
Aug. 04, 2020

Filed:

Apr. 11, 2017

Filtration filter

Applicant:

Murata Manufacturing Co., Ltd., Nagaokakyo-shi, Kyoto-fu, JP;

Inventors:

Takashi Kondo, Nagaokakyo, JP;

Yoshiji Okamoto, Nagaokakyo, JP;

Seiji Kamba, Nagaokakyo, JP;

Assignee:

MURATA MANUFACTURING CO., LTD., Nagaokakyo-shi, Kyoto-Fu, JP;

Attorney:

Arent Fox LLP

Primary Examiner:

T Bennett McKenzie

Int. Cl.
CPC ...
B01D 46/00 (2006.01); B01D 33/01 (2006.01); B01D 63/08 (2006.01); C12M 1/00 (2006.01); B01D 33/82 (2006.01); B01D 39/20 (2006.01); B01D 46/16 (2006.01); C12M 1/26 (2006.01); B01D 33/00 (2006.01); B01D 39/10 (2006.01);
U.S. Cl.
CPC ...
B01D 33/0183 (2013.01); B01D 33/82 (2013.01); B01D 39/2027 (2013.01); B01D 46/0054 (2013.01); B01D 46/16 (2013.01); B01D 63/087 (2013.01); C12M 33/14 (2013.01); C12M 47/02 (2013.01); B01D 33/0041 (2013.01); B01D 39/10 (2013.01); B01D 46/0002 (2013.01); B01D 2201/0415 (2013.01); B01D 2275/202 (2013.01); B01D 2275/203 (2013.01); B01D 2313/025 (2013.01);
Abstract

A filtration filter comprises a porous film including a central film portion having a plurality of through holes and an outer edge portion adjacent to the central film portion. The porous film portion lies in a flat plane in the absence of a force being applied to the central portion of the central film portion. A frame holds the outer edge portion of the porous film in such a manner that when a force is applied to the central film portion in a first direction, the central film portion moves in the first direction relative to the flat plane and the outer edge portion moves in a second direction, opposite to the first direction, relative to the flat plane. In this way stresses applied to the porous film during a filtering operation are reduced.

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