Number | Date | Country | Kind |
---|---|---|---|
4208108 | Mar 1992 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3945965 | Ramig, Jr. et al. | Mar 1976 | |
4355127 | Isley | Oct 1982 |
Number | Date | Country |
---|---|---|
0398551 | Nov 1990 | EPX |
0024155 | Feb 1991 | JPX |
575480 | Feb 1946 | GBX |
Entry |
---|
Patent Abstracts of Japan, vol. 8, No. 172 (C-237) (1609) & JP-A-59 071 340 (Toyoda Chuo Kenkyusho). |
Dev. Sedimentology 3B (Int Clay Conf 1981) 1981, pp. 763-769 Squza Santos, Riego `Effect of lithium treatment on the bulk densities of exfoliated vermiculites`. |