Composite microporous membranes
US5228994A · kind A · utility
45Cited by
1References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D69/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite microporous membrane is provided having a microporous nonretentive substrate and a retentive microporous layer coated directly to the substrate in the absence of an intermediate support layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.