Number | Date | Country | Kind |
---|---|---|---|
2522692 | May 1975 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2043906 | Sheppard | Jun 1936 | |
2731347 | Gray | Jan 1956 | |
3640809 | Polson et al. | Feb 1972 | |
3666532 | Reedy et al. | May 1972 | |
3717469 | Slonimsky et al. | Feb 1973 |
Entry |
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Stauff, J. Kolloidchemie, Springer Verlag, Berlin, 1960, pp. 509-519. |