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Creation Date 

1. Before 1976  (10)
2. 1976 To 1982  (38)
3. 1983 To 1989  (85)
4. 1990 To 1997  (95)
5. After 1997  (17)
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Subject 

1. Textiles  (224)
2. Production Of Cellulose  (212)
3. Paper-Making  (212)
4. Regeneration Of Pulping Liquors  (144)
5. Apparatus Therefor  (144)
6. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (144)
7. Chemistry  (60)
8. Metallurgy  (60)
9. Paper Not Otherwise Provided For  (56)
10. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (56)
11. Impregnating Or Coating Of Paper  (56)
12. Pulp Compositions  (56)
13. Treatment Of Finished Paper Not Covered By Class B31 Or Subclass D21g  (56)
14. Transporting  (46)
15. Performing Operations  (46)
16. Fibrous Raw Materials Or Their Mechanical Treatment  (28)
17. Physical Or Chemical Processes Or Apparatus In General  (22)
18. Compositions Based Thereon  (18)
19. Their Preparation Or Chemical Working-Up  (18)
20. Organic Macromolecular Compounds  (18)
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Language 

1. Swedish  (102)
2. English  (5)
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