Sound-permeable metal plate and sound-absorbing composite plate using same
US10699686B2 · kind B2 · utility
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6References
9Claims
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Key dates
| Filing date | Nov 8, 2017 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Oct 19, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R13/0838
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A sound-permeable metal plate, which is a plate processed to have concavity and convexity formed thereon, may include: a plurality of cells protruding from the plate; and a flat base portion formed between the plurality of cells, wherein each of the cells includes a plurality of wall surface parts, which are bent on and protrude from the base portion, and a cover portion extending from end portions of the wall surface parts, and each of the cells has a straight line-shaped slit formed through the plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.