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:
Apr. 29, 2025
Filed:
Aug. 31, 2022
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Ajou University Industry-academic Cooperation Foundation, Suwon-si, KR;
Jin Ho Hwang, Cheonan-si, KR;
Ji Ah Kim, Seoul, KR;
Min Ho Cho, Suwon-si, KR;
Byoung Chul Park, Daejeon, KR;
Young Hwan Yoon, Daejeon, KR;
Kang Ho Cheon, Daejeon, KR;
Eun Gook Kim, Sejong-si, KR;
Young Don Choi, Asan-si, KR;
Jin Woo Lee, Suwon-si, KR;
Hyundai Motor Company, Seoul, KR;
Kia Corporation, Seoul, KR;
Ajou University Industry-Academic Cooperation Foundation, Seoul, KR;
Abstract
In accordance with an embodiment, a noise reduction device includes a housing; and a slit located inside the housing and having a unit cell located therein, the unit cell comprising a sound absorbing layer configured to absorb noise generated from a sound source inside the housing, and a meta-material panel layer located on one surface of the sound absorbing layer, the meta-material panel layer comprising a sound meta-material.