Number | Date | Country | Kind |
---|---|---|---|
3310712 | Mar 1983 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3540867 | Baron et al. | Nov 1970 | |
3972693 | Wiesner et al. | Aug 1976 | |
4031030 | Rudolph | Jun 1977 | |
4060591 | Garber et al. | Nov 1977 | |
4065273 | Rudolph | Dec 1977 | |
4132636 | Iwase et al. | Jan 1979 | |
4311597 | Bhattacharyya | Jan 1982 | |
4347063 | Reh et al. | Aug 1982 |
Number | Date | Country |
---|---|---|
2229213 | Jan 1974 | DEX |
2542055 | Mar 1977 | DEX |
2543532 | Mar 1977 | DEX |
2527985 | Apr 1977 | DEX |
Entry |
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Article by Dr. F. Wohler entitled "Removal and Recovery of Phenol and Ammonia from Gas Liquor" (Chemsa May 1979). |
German-Language Excerpt from "Ullmans Encyklopadie der technisch en Chemie", 4th Edition, vol. 14. |