Number | Name | Date | Kind |
---|---|---|---|
2574065 | Schulein | Nov 1951 | |
2793937 | East | May 1957 | |
3493328 | Nieuwenhuis | Feb 1970 | |
3843769 | Partridge et al. | Oct 1974 | |
3856917 | Texier et al. | Dec 1974 | |
3896209 | Fournier et al. | Jul 1975 | |
4092439 | Demazeau et al. | May 1978 | |
4242127 | Muller et al. | Dec 1980 | |
4349514 | Watanabe et al. | Sep 1982 | |
4446026 | Beutier et al. | May 1984 | |
4704259 | Lipsztajn | Nov 1987 | |
5112583 | Bruzzone et al. | May 1992 | |
5120523 | Nakao et al. | Jun 1992 | |
5260039 | Schwab et al. | Nov 1993 | |
5271910 | van der Meer et al. | Dec 1993 |
Number | Date | Country |
---|---|---|
1249841 | Sep 1967 | DEX |
54-043172 | Apr 1979 | JPX |
56-015883 | Feb 1981 | JPX |
57-135724 | Aug 1982 | JPX |
Entry |
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West, T. S., "Liquid-Liquid Extraction Procedures in Inorganic Analysis", Metallurigia, p. 47, Jul., 1956. |