Number | Name | Date | Kind |
---|---|---|---|
1985424 | Piggott | Mar 1934 | |
2965576 | Wilson | Dec 1960 | |
3663445 | Augustin et al. | May 1972 | |
4151127 | Perner et al. | Apr 1979 | |
4321166 | McGrady | Mar 1982 | |
4483780 | Llenado | Nov 1984 | |
4627931 | Malik | Dec 1986 | |
4784798 | Geke et al. | Nov 1988 | |
4915864 | Kita et al. | Apr 1990 | |
5194639 | Connor et al. | Mar 1993 | |
5266690 | McCurry, Jr. et al. | Nov 1993 | |
5286402 | Geke et al. | Feb 1994 | |
5334764 | Scheibel et al. | Aug 1994 | |
5395543 | Johansson et al. | Mar 1995 | |
5527362 | Cole et al. | Jun 1996 | |
5545354 | Ofosu-Asante | Aug 1996 |
Number | Date | Country |
---|---|---|
1537265 | Jul 1968 | FRX |
2505252 | Aug 1975 | DEX |
3530623 | Aug 1985 | DEX |
1321513 | Jun 1973 | GBX |
Entry |
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Kirk-Othmer, Encyclopedia of Chemical Technology, vol. 21; pp. 162-164 date unknown. |