Number | Name | Date | Kind |
---|---|---|---|
3048531 | Fried | Aug 1962 | |
3102145 | Nomine et al. | Aug 1963 | |
3499912 | Uskokovic et al. | Mar 1970 | |
3766256 | Uskokovic et al. | Oct 1973 | |
3796728 | Tanabe | Mar 1974 | |
3835160 | Tanabe | Sep 1974 |
Number | Date | Country |
---|---|---|
1,257,111 | Dec 1971 | UK |
1,211,697 | Nov 1970 | UK |
Entry |
---|
Chem. Abstracts, 70:88108v (1969). |
Chem. Abstracts, 68:69183h (1968). |