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Creation Date 

1. Before 1996  (2)
2. 1996 To 1998  (10)
3. 1999 To 2003  (2)
4. 2004 To 2018  (4)
5. After 2018  (3)
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Subject 

1. Mixing, E.G. Dissolving, Emulsifying, Dispersing  (8)
2. Separation  (6)
3. Their Relevant Apparatus  (5)
4. Chemical Or Physical Processes, E.G. Catalysis Or Colloidchemistry  (5)
5. Chemistry  (4)
6. Metallurgy  (4)
7. Textiles  (3)
8. Production Of Cellulose  (3)
9. Treatment Of Water, Waste Water, Sewage, Or Sludge  (3)
10. Paper-Making  (3)
11. Paper Not Otherwise Provided For  (2)
12. Preparation Thereof Not Covered By Subclasses D21c Or D21d  (2)
13. Impregnating Or Coating Of Paper  (2)
14. Regeneration Of Pulping Liquors  (2)
15. Pulp Compositions  (2)
16. Apparatus Therefor  (2)
17. Production Of Cellulose By Removing Non-Cellulose Substancesfrom Cellulose-Containing Materials  (2)
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