Number | Name | Date | Kind |
---|---|---|---|
4083942 | Sanders | Apr 1978 | |
4248850 | Keblys | Feb 1981 | |
4290866 | Bolton et al. | Sep 1981 | |
4514374 | Kirsch | Apr 1985 | |
4572771 | Duyvesteyn et al. | Feb 1986 | |
5089242 | Dijkhuis et al. | Feb 1992 | |
5208004 | Myerson | May 1993 | |
5230879 | Beaver et al. | Jul 1993 | |
5951954 | Fisher et al. | Sep 1999 | |
6036929 | Brown et al. | Mar 2000 |
Number | Date | Country |
---|---|---|
882916 | Nov 1981 | SUX |
Entry |
---|
Dec. 18, 1997, Method of Manufacturing Clear Brine Fluids from Impure Zinc Feedstock, Ser. No. 08/993,914. |