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Creation Date 

1. Before 2005  (4)
2. 2005 To 2010  (5)
3. 2011 To 2013  (6)
4. 2014 To 2017  (5)
5. After 2017  (6)
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Subject 

1. Paper Not Otherwise Provided For  (18)
2. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (18)
3. Impregnating Or Coating Of Paper  (18)
4. Pulp Compositions  (18)
5. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (18)
6. Methods Of Producing Paper Thereon  (8)
7. Paper-Making Machines  (8)
8. Transporting  (6)
9. Performing Operations  (6)
10. Fibrous Raw Materials Or Their Mechanical Treatment  (3)
11. Handling Thin Or Filamentary Material  (2)
12. Building  (2)
13. Conveying  (2)
14. Finishing Work On Buildings, E.G. Stairs, Floors  (2)
15. Accessories, Closures, Or Fittings Therefor  (2)
16. Human Necessities  (2)
17. Fixed Constructions  (2)
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Language 

1. Korean  (13)
2. Chinese  (9)
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