Invention Grant
- Patent Title: Porous sound-absorbing board
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Application No.: US15778476Application Date: 2016-11-18
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Publication No.: US11021871B2Publication Date: 2021-06-01
- Inventor: Zenzo Yamaguchi , Ichiro Yamagiwa
- Applicant: KOBE STEEL, LTD.
- Applicant Address: JP Hyogo
- Assignee: KOBE STEEL, LTD.
- Current Assignee: KOBE STEEL, LTD.
- Current Assignee Address: JP Hyogo
- Agency: Studebaker & Brackett PC
- Priority: JPJP2015-231451 20151127,JPJP2016-120172 20160616
- International Application: PCT/JP2016/084334 WO 20161118
- International Announcement: WO2017/090538 WO 20170601
- Main IPC: E04B1/86
- IPC: E04B1/86 ; G10K11/172 ; G10K11/168 ; E04B1/84
Abstract:
A perforated sound-absorbing plate includes a perforated plate as a base material in which a large number of through holes are formed. A coating film is provided on an inner wall surface of the through hole, and a through-hole portion whose volume is smaller than a volume of the through hole is formed by the coating film.
Public/Granted literature
- US20190112805A1 POROUS SOUND-ABSORBING BOARD Public/Granted day:2019-04-18
Information query
IPC分类:
