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Creation Date 

1. Before 2000  (8)
2. 2000 To 2005  (12)
3. 2006 To 2010  (12)
4. 2011 To 2016  (17)
5. After 2016  (38)
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Subject 

1. Paper Not Otherwise Provided For  (36)
2. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (36)
3. Impregnating Or Coating Of Paper  (36)
4. Pulp Compositions  (36)
5. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (36)
6. Fibrous Raw Materials Or Their Mechanical Treatment  (21)
7. Treatment Of The Materials Before Passing To The Paper-Makingmachine  (19)
8. Chemistry  (15)
9. Metallurgy  (15)
10. Methods Of Producing Paper Thereon  (11)
11. Paper-Making Machines  (11)
12. Manufacture Thereof  (10)
13. Fertilisers  (10)
14. Fertilisers Characterised By Their Form  (7)
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Language 

1. English  (77)
2. Chinese  (55)
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