Number | Date | Country | Kind |
---|---|---|---|
5-295992 | Nov 1993 | JPX | |
5-295993 | Nov 1993 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4438281 | Johnson, Jr. | Mar 1984 | |
5102849 | Kemp et al. | Apr 1992 | |
5210325 | Kemp et al. | May 1993 | |
5395973 | Washington et al. | Mar 1995 |
Number | Date | Country |
---|---|---|
0250168 | Dec 1987 | EPX |
0375267 | Jun 1990 | EPX |
0539821 | Oct 1992 | EPX |
49-47728 | Dec 1974 | JPX |
2225446 | Sep 1990 | JPX |
158167 | Mar 1957 | SEX |
Entry |
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Industrial and Engineering Chemistry, Product Research and Development, (1986), 25:424-430. |
"Ion-Exchange--Introduction on Theory and Practice", (1981), Maruzen Co., Ltd., p. 34. |