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Creation Date 

1. Before 2004  (1)
2. 2004 To 2009  (1)
3. 2010 To 2010  (1)
4. 2011 To 2012  (2)
5. After 2012  (4)
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Subject 

1. Paper Not Otherwise Provided For  (4)
2. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (4)
3. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (4)
4. Impregnating Or Coating Of Paper  (4)
5. Pulp Compositions  (4)
6. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (1)
7. Fibrous Raw Materials Or Their Mechanical Treatment  (1)
8. Regeneration Of Pulping Liquors  (1)
9. Apparatus Therefor  (1)
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Language 

1. Chinese  (4)
2. Korean  (4)
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