Number | Date | Country | Kind |
---|---|---|---|
3219248 | May 1982 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3746591 | Banfield | Jul 1973 | |
3972614 | Johansen et al. | Aug 1976 | |
3973001 | Jaeger et al. | Aug 1976 | |
4013791 | Wissmann et al. | Mar 1977 | |
4166948 | Mittenzwei et al. | Sep 1978 | |
4322275 | Jain | Mar 1982 | |
4350581 | Schmoldt et al. | Sep 1981 |
Number | Date | Country |
---|---|---|
1076888 | Mar 1960 | DEX |
2065812 | Jan 1976 | DEX |
2512936 | Sep 1976 | DEX |
2946284 | May 1981 | DEX |
Entry |
---|
Porter, M. C. et al, "Membrane Ultrafiltration", Chem. Tech., Jan. 1971, pp. 56-63. |