This application is a continuation-in-part of copending U.S. patent application Ser. No. 07/692,755 filed on Apr. 29, 1991 now U.S. Pat. No. 5,160,493.
Number | Name | Date | Kind |
---|---|---|---|
2483131 | Garrison | Sep 1949 | |
2620314 | Hoekstra | Feb 1952 | |
2928785 | Hirschler | Mar 1960 | |
3205277 | Pollitzer et al. | Sep 1965 | |
3274124 | O'Hara | Sep 1966 | |
3909450 | O'Hara | Sep 1975 | |
4310440 | Wilson et al. | Jan 1982 | |
4422959 | Lawson et al. | Dec 1983 | |
4440871 | Lok et al. | Apr 1984 | |
4503023 | Breck et al. | Mar 1985 | |
4576711 | Ward et al. | Mar 1986 | |
4588701 | Chiang et al. | May 1986 | |
4591576 | Chiang et al. | May 1986 | |
4597956 | Hinchey et al. | Jul 1986 | |
4610856 | Skeels et al. | Sep 1986 | |
4711770 | Skeels et al. | Dec 1987 | |
4753910 | Han et al. | Jun 1988 | |
4806513 | McDaniel et al. | Feb 1989 | |
4868147 | Pearson et al. | Sep 1989 | |
4870222 | Bakas et al. | Sep 1989 | |
5008233 | Lambert | Apr 1991 |
Entry |
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"Zeolite Chemistry V-Substitution of Silicon for Aluminum in Zeolites via Reaction with Aqueous Fluorosilicate" published at p. 87 of Proceedings of 6th International Zeolite Conference, 1983, edited by David Olson; Buterworth, Guildford, U.K. |
"Faujasites Dealuminated with Ammonium Hexafluorosilicate: Variables Affecting the Method of Preparation" by G. Garralon et al. appearing at p. 268 of Zeolites, vol. 8, Jul., 1988. |
Inside cover of Merck Index, 11th Edition, (1989), published by Merck & Co., Rayway, N.J., U.S.A. |
Number | Date | Country | |
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Parent | 692755 | Apr 1991 |