Number | Date | Country | Kind |
---|---|---|---|
3-229499 | Aug 1991 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
2399982 | Britt | May 1946 | |
3536578 | Brundige | Oct 1970 | |
3723164 | Marton | Mar 1973 | |
3884625 | Green | May 1975 | |
4110155 | Minagawa et al. | Aug 1978 | |
4263073 | Jaisle et al. | Apr 1981 | |
4327174 | von Meer | Apr 1982 | |
4335184 | Miyamoto et al. | Jun 1982 | |
4559103 | Nomura et al. | Dec 1985 | |
4832793 | Alexander | May 1989 | |
4994147 | Foley | Feb 1991 | |
5182175 | Sakaki et al. | Jan 1993 | |
5266383 | Sakaki et al. | Nov 1993 |
Number | Date | Country |
---|---|---|
0178033 | Apr 1986 | EPX |
Entry |
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Pulp and Paper, Chemistry and Chemical Technology, vol. III, Third Edition, New York, Wiley-Interscience Publication, 1981, pp. 1518-1519. |