Number | Name | Date | Kind |
---|---|---|---|
1271591 | Loomis | Jul 1918 | |
1723800 | Michael et al. | Aug 1929 | |
1859888 | Richter | May 1932 | |
2701255 | Heratige et al. | Feb 1955 | |
2926114 | Gardgaard et al. | Feb 1960 | |
2976273 | Ball et al. | Mar 1961 | |
3136710 | Dubey | Jun 1964 | |
3704218 | Kato et al. | Nov 1972 | |
4470876 | Beaupre et al. | Sep 1984 | |
4482459 | Shiver | Nov 1984 |
Number | Date | Country |
---|---|---|
2711072 | Sep 1977 | DEX |
2926520 | Jan 1980 | DEX |
26367 | Feb 1977 | JPX |
Entry |
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Collins, et al., "Spent Sulfite Liquor Reducing Sugar Purification by Ultrafiltration with Dynamic Membranes", TAPPI, Jun. 1973, vol. 56, No. 6. |