Number | Date | Country | Kind |
---|---|---|---|
4109502 | Mar 1991 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
3390119 | Alexander et al. | Jun 1968 | |
3579569 | Montgomery et al. | May 1971 | |
4479902 | Rosen | Oct 1984 | |
4839329 | Ihm et al. | Jun 1989 | |
5002917 | Deller et al. | Mar 1991 |
Number | Date | Country |
---|---|---|
1157344 | Nov 1983 | CAX |
0327723 | Aug 1989 | EPX |
1667084 | Jan 1963 | DEX |
59-112835 | Jun 1984 | JPX |
Entry |
---|
Koth, D., et al., "Eigenschaften hochtemperaturhydrolytisch hergestellter Kieselsaeuren und Metalloxide fuer Katalysatoren", Chem. Ing. Tech. (1980), vol. 52, pp. 628-634. |