Number | Name | Date | Kind |
---|---|---|---|
3218161 | Kunda et al. | Nov 1965 | |
3575853 | Gaughan et al. | Apr 1971 | |
3617559 | Cywin | Nov 1971 | |
3728430 | Clitheroe | Apr 1973 | |
3747764 | Graham et al. | Jul 1973 | |
4186088 | Fitch et al. | Jan 1980 | |
4465597 | Herman et al. | Aug 1984 | |
4543189 | Rice et al. | Sep 1985 | |
4566975 | Torkel | Jan 1986 | |
4572822 | Abe et al. | Feb 1986 | |
4606829 | Rice et al. | Aug 1986 | |
4728438 | Featherstone et al. | Mar 1988 | |
4891067 | Rappas et al. | Jan 1990 | |
5032175 | Raborar et al. | Jul 1991 | |
5039428 | Wentzler et al. | Aug 1994 |
Number | Date | Country |
---|---|---|
1020363 | Nov 1977 | CAX |
2216114 | Oct 1989 | GBX |
Entry |
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"Alternative Processing of Copper Smelter Flue Dust for Bismuth Control", D. K. Steele and K. S. Gritton, presented at the 1st Separation Division Topical Conference on Separations Technologies--New Developments and Opportunities; Miami Beach, Fla., Nov., 1992, pp. 1-8. |
"The Advantage of a Crowd for Acid Waste Liquors", J. H. Smith III, Dec., 1992, pp. 87-89. |