Cellulose derivative reverse osmosis membrane
US4305824A · kind A · utility
7Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1980 |
| Grant date | Dec 15, 1981 |
| Priority date | — |
| Expiry date | Feb 22, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2001/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Cellulose derivative reverse osmosis membrane containing tetracarboxylic acid and mono- or divalent carboxylic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.