Number | Name | Date | Kind |
---|---|---|---|
2615845 | Lippincott et al. | Oct 1952 | |
4242098 | Braun et al. | Dec 1980 | |
4282006 | Funk | Aug 1981 | |
4302212 | Yamamura | Nov 1981 |
Number | Date | Country |
---|---|---|
55-56189 | Apr 1980 | JPX |
56-57891 | May 1981 | JPX |
Entry |
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Steffers et al., Chemical Abstracts, vol. 91, No. 91:108877j, 1979. |