US 11,951,422 B2
Filtration filter
Shusuke Yokota, Nagaokakyo (JP); Takashi Kondo, Nagaokakyo (JP); Masaru Banju, Nagaokakyo (JP); and Miwako Nishikawa, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Dec. 1, 2020, as Appl. No. 17/108,340.
Application 17/108,340 is a continuation of application No. PCT/JP2019/031197, filed on Aug. 7, 2019.
Claims priority of application No. 2018-155942 (JP), filed on Aug. 23, 2018.
Prior Publication US 2021/0077925 A1, Mar. 18, 2021
Int. Cl. B01D 29/31 (2006.01); B01D 39/20 (2006.01); C12M 1/12 (2006.01); C12M 1/26 (2006.01)
CPC B01D 29/31 (2013.01) [B01D 39/2027 (2013.01); C12M 33/14 (2013.01); C12M 37/02 (2013.01); B01D 2201/184 (2013.01); B01D 2201/4038 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A filtration filter having a tubular shape and defining a first opening and a second opening facing the first opening, the filtration filter comprising:
a filter base that defines a plurality of through holes arranged in a square grid array, wherein
the filter base includes a continuous portion having a first set of through holes of the plurality of through holes and a non-continuous portion having a second set of through holes of the plurality of through holes, the continuous portion extending in a first direction from the first opening of the filtration filter toward the second opening of the filtration filter and extending in a second direction along at least a first portion of a circumference of the filtration filter orthogonal to the first direction, the non-continuous portion having a first row of the second set of through holes shifted with respect to a second row of the second set of through holes, the non-continuous portion extending in the first direction.