Number | Date | Country | Kind |
---|---|---|---|
2714564 | Apr 1977 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2020298 | Carothers et al. | Nov 1935 | |
2936310 | Beets et al. | May 1960 |
Number | Date | Country |
---|---|---|
796410 | Oct 1935 | FRX |
1474903 | Jan 1966 | FRX |
1528546 | Jun 1968 | FRX |
47-25071 | Jul 1972 | JPX |
Entry |
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Hill et al., Jour. American Chemical Soc., 55, 5031-5039, 1933. |
Yasukawa et al., Chem. Abstracts, vol. 78, 1973, 158966q and 158968s. |