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:
Aug. 11, 2026
Filed:
Nov. 22, 2023
Ajou University Industry-academic Cooperation Foundation, Suwon-si, KR;
The Center for Advanced Meta-materials, Daejeon, KR;
Jin Woo Lee, Suwon-si, KR;
Gyeong Ju Lee, Suwon-si, KR;
AJOU UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION, Suwon-si, KR;
THE CENTER FOR ADVANCED META-MATERIALS, Daejeon, KR;
Abstract
The present disclosure provides an acoustic metamaterial-based muffler for exhaust noise reduction, including an exhaust flow body that is provided with an inlet through which exhaust gas of an internal combustion engine flows in on one side, and an outlet through which the exhaust gas flows out on the other side, and a flow passage for guiding a movement of the exhaust gas therein; and a plurality of noise reduction units that are sequentially disposed along a discharge direction of the exhaust gas inside the exhaust flow body to reduce noise in a specific frequency band in exhaust noise of the exhaust gas caused by the movement of the exhaust gas on the inside of the exhaust flow body.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile