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:
Nov. 21, 2023
Filed:
Dec. 16, 2020
Applicant:
Arkray, Inc., Kyoto, JP;
Inventors:
Assignee:
ARKRAY, Inc., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 29/56 (2006.01);
U.S. Cl.
CPC ...
B01D 29/56 (2013.01); B01D 2325/02 (2013.01);
Abstract
A filter device includes a first filter, a first retaining member that has a hollow shape, the first filter being fitted inside the first retaining member, a second filter that has a smaller pore size than the first filter, a second retaining member that is disposed downstream of the first filter and that has a hollow shape, the second filter being fitted inside the second retaining member, and a spacer that has a hollow shape, that is disposed between the first retaining member and the second retaining member, that maintains a non-contact state between the first filter and the second filter, and that includes a first contact portion contacting the first filter.