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:
Mar. 24, 2026
Filed:
May. 07, 2025
Subaru Corporation, Tokyo, JP;
Shingo Shimizu, Tokyo, JP;
SUBARU CORPORATION, Tokyo, JP;
Abstract
An exhaust purification apparatus includes a particulate filter, first and second exhaust passages. The particulate filter removes particulate matter. The first and second exhaust passages are coupled in parallel and coupled to an exhaust passage. The first exhaust passage communicates with a tail pipe via a secondary filter in an initial state of the particulate filter. After a start of use of the particulate filter, communication of the first exhaust passage with the tail pipe is blocked when the secondary filter is clogged with the particulate matter. The second exhaust passage is closed in the initial state. After the start, the second exhaust passage communicates with the tail pipe when the secondary filter is clogged with the particulate matter to cause an increase in pressure loss of the secondary filter and an increase in an exhaust pressure, and thus discharge of the liquid and/or evaporation of the liquid occurs.