Water-proof air-permeable filter and use of the same
US9044706B2 · kind B2 · utility
7Cited by
16References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2011 |
| Grant date | Jun 2, 2015 |
| Priority date | — |
| Expiry date | Jul 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water-proof air-permeable filter (1) includes: a resin film (2) having formed therein a plurality of through pores (21); a treated layer (3) having hydrophobicity and oil repellency, and formed on at least one of both surfaces in the thickness direction of the resin film (2) such that the treated layer (3) has openings (31) at positions corresponding to the through pores (21); and a loop-shaped double-sided tape (4) stuck to an edge region of one of both surfaces in the thickness direction of the resin film (2), with the treated layer (3) interposed therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.