Number | Date | Country | Kind |
---|---|---|---|
5528/73 | Apr 1973 | CH |
Number | Name | Date | Kind |
---|---|---|---|
2272562 | Iwamae | Feb 1942 | |
2881076 | Sair | Apr 1959 | |
3099649 | Kawamura et al. | Jul 1963 | |
3547900 | Dienst et al. | Dec 1970 | |
3723407 | Miller et al. | Mar 1973 |
Entry |
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Encyclopedia of Chem. Tech., vol. 18, 1970, Kirk et al., pp. 603-610. |