Number | Date | Country | Kind |
---|---|---|---|
4209800 | Mar 1992 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
4322394 | Mezey et al. | Mar 1982 | |
5087778 | Yates | Feb 1992 |
Number | Date | Country |
---|---|---|
902590 | Aug 1962 | GBX |
Entry |
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Ullmann's Encyclopedia of Industrial Chemistry, ("Adsorption"), Fourth Ed., Band 2, 1972, pp. 610-613. |