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:
Oct. 28, 2025
Filed:
Jan. 24, 2023
Seiko Epson Corporation, Tokyo, JP;
Shigeki Suzuki, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A filter unit includes a filter through which a liquid passes, a filter chamber that is divided into an upstream chamber and a downstream chamber by the filter, an inflow passage through which a liquid flows into the upstream chamber, a first outflow passage through which a liquid flows out from the downstream chamber, and a second outflow passage through which a liquid flows out from the downstream chamber, a distance from the inflow passage to the first outflow passage is shorter than a distance from the inflow passage to the second outflow passage, and a passage resistance of the second outflow passage is lower than a passage resistance of the first outflow passage.