Number | Date | Country | Kind |
---|---|---|---|
4142769 | Dec 1991 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
2889257 | Griffin et al. | Jun 1959 | |
3658656 | Adica et al. | Apr 1972 | |
3729386 | Irwin et al. | Apr 1973 | |
3884951 | Oswald | May 1975 | |
3892634 | Hajek et al. | Jul 1975 | |
3897314 | Diebsch et al. | Jul 1975 | |
3912600 | Hatfield, Jr. et al. | Oct 1975 | |
4065362 | Kataoka et al. | Dec 1977 | |
4289589 | Koehler et al. | Sep 1981 | |
4297456 | Reischl et al. | Oct 1981 |
Number | Date | Country |
---|---|---|
269218 | Jun 1988 | EPX |
2246920 | Apr 1973 | DEX |
1353787 | May 1974 | GBX |
1408745 | Oct 1975 | GBX |
9009990 | Sep 1990 | WOX |
Entry |
---|
Ullmanns Encyklopadie der technischen Chemie, rth Edition, vol. 13, pp. 347-357, Verlag Chemie CmbH, D-6940 Weinheim, 1977. |