Number | Name | Date | Kind |
---|---|---|---|
2201812 | Daniel | May 1940 | |
2784158 | Bodamer | Mar 1957 | |
3268441 | Lindstrom | Aug 1966 | |
3442778 | Westerlund | May 1969 | |
3485729 | Hertz | Dec 1969 | |
3627479 | Yee | Dec 1971 | |
3627679 | Fuller | Dec 1971 | |
3691041 | Stralser | Sep 1972 | |
3694307 | Iwahashi | Sep 1972 | |
3793174 | Ichiki | Feb 1974 | |
3935092 | Bizot | Jan 1976 |
Number | Date | Country |
---|---|---|
928,008 | Jun 1973 | CA |
Entry |
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"Electrolytic Coagulation of Ligrin from Kraft Mill Bleach Plant Wastewaters," Herer & Woodard & Tappi, vol. 59, No. 1, Jan. 1976, pp. 134-136. |
"The World's First Closed-cycle Bleached Kraftmill is now Being Built," Tapp, vol. 59, No. 2, Feb. 1976, p. 26. |