Number | Date | Country | Kind |
---|---|---|---|
95-03949 | Feb 1995 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
2760584 | Rohrback | Aug 1956 | |
2879847 | Irwin | Mar 1959 | |
3072192 | Van Poollen | Jan 1963 | |
3179170 | Burtch | Apr 1965 | |
3199591 | Keplet | Aug 1965 | |
3283817 | Roberts | Nov 1966 | |
3531409 | Seffens et al. | Sep 1970 | |
3756949 | Schreurs | Sep 1973 | |
3782469 | Fulford | Jan 1974 | |
4291763 | Singer | Sep 1981 | |
4456067 | Pinner | Jun 1984 | |
4660645 | Newlove | Apr 1987 | |
4670166 | McDougall | Jun 1987 | |
5196124 | Connor et al. | Mar 1993 | |
5322121 | Hrachovy | Jun 1994 |
Number | Date | Country |
---|---|---|
0193369 | Sep 1986 | EPX |
0416908 | Mar 1991 | EPX |
0543358 | May 1993 | EPX |
1799893 | Mar 1993 | SUX |
2284223 | May 1995 | GBX |
Entry |
---|
R.J. Powell et al, "SPE 28999 Controlled-Release Scale Inhibitor for Use in Fracturing Treatments," 1995, Society of Petroleum Engineers; SPE International; pp. 571-579. |
Derwent Database WPI, AN 94-158056, Week 9419, relating to SU 1,799,893. |