Number | Name | Date | Kind |
---|---|---|---|
3207633 | Meltzer et al. | Sep 1965 | |
4376810 | Takeda et al. | Mar 1983 | |
4525527 | Takeda et al. | Jun 1985 | |
4703067 | Mikita et al. | Oct 1987 | |
4820742 | Alexander et al. | Apr 1989 | |
4963447 | Nishimura et al. | Oct 1990 | |
4970267 | Bailey et al. | Nov 1990 | |
5128222 | Yoshizawa et al. | Jul 1992 | |
5168018 | Yoshizawa et al. | Dec 1992 | |
5312476 | Uemura et al. | May 1994 | |
5401590 | Chalilpoyil et al. | Mar 1995 | |
5447809 | Hafner et al. | Sep 1995 |
Number | Date | Country |
---|---|---|
0414990A1 | Mar 1991 | EPX |
0678927A1 | Oct 1995 | EPX |
Entry |
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Vassallo et al., "Synthetic and Natural Polymers," Absorbency Ch. VI, 197-216 (1985) (month not available). |