Waterproof article and method for making a waterproof article
US4818596A · kind A · utility
10Cited by
10References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1988 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Jul 13, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/3886
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An article which is rendered waterproof by a microporous membrane of a hydrophobic material, the pores of the membrane in a layer-like region on or towards a surface thereof being plugged with a hydrophilic material, leaving hydrophobic material exposed on the said surface between the pores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.