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Delignification of cellulosic material with an alkaline aqueous medium containing oxygen dissolved therein
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1974-11-06 |
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1975-10-10 |
1977-01-11 |
International Paper Company |
Oxygen-alkali delignification of low consistency wood pulp
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1976-12-01 |
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1977-09-26 |
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Weyerhaeuser Company |
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1978-10-23 |
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1978-12-18 |
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Saett att genomfoera alkaliextraktion av cellulosamassa i naervaro av syre
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1979-06-15 |
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The Black Clawson Company |
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