US 12,440,785 B2
Filtration filter and filtration device
Shusuke Yokota, Nagaokakyo (JP); Masaru Banju, Nagaokakyo (JP); Toshikazu Kawaguchi, Nagaokakyo (JP); and Takashi Kondo, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Jul. 20, 2020, as Appl. No. 16/933,321.
Application 16/933,321 is a continuation of application No. PCT/JP2019/001076, filed on Jan. 16, 2019.
Claims priority of application No. 2018-051472 (JP), filed on Mar. 19, 2018.
Prior Publication US 2020/0346144 A1, Nov. 5, 2020
Int. Cl. B01D 35/30 (2006.01); B01D 29/00 (2006.01); B01D 29/01 (2006.01); B01D 29/05 (2006.01); B01D 39/20 (2006.01); B01D 63/08 (2006.01); B01D 69/02 (2006.01); C12M 1/28 (2006.01)
CPC B01D 35/30 (2013.01) [B01D 29/00 (2013.01); B01D 29/0097 (2013.01); B01D 29/014 (2013.01); B01D 29/05 (2013.01); B01D 63/087 (2013.01); B01D 69/02 (2013.01); B01D 29/0095 (2013.01); B01D 29/01 (2013.01); B01D 39/20 (2013.01); B01D 2201/184 (2013.01); B01D 2239/0478 (2013.01); B01D 2275/202 (2013.01); C12M 1/28 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A filtration filter comprising:
a filter section having a plurality of through-holes passing through and directly connecting a first main surface and a second main surface opposite the first main surface of the filter section, the filter section being constructed such that objects to be filtered contained in a liquid are captured; and
a frame section surrounding an outer periphery of the filter section,
wherein the second main surface of the filter section has a flat shape, and
wherein a thickness of the filter section decreases in an order from a central region of the filter section to an intermediate region of the filter section and then followed by a rim side region of the filter section, the rim side region being closest to the frame section relative to the central region and the intermediate region.