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Creation Date 

1. Before 1981  (56)
2. 1981 To 1990  (54)
3. 1991 To 2000  (97)
4. 2001 To 2011  (2,210)
5. After 2011  (20,642)
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New Records 

1. New From Last Week  (9)
2. New From Last Month  (664)
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Subject 

1. Chemistry  (8,938)
2. Metallurgy  (8,938)
3. Transporting  (7,486)
4. Performing Operations  (7,486)
5. Treatment Of Water, Waste Water, Sewage, Or Sludge  (6,460)
6. Physics  (5,224)
7. Physical Or Chemical Processes Or Apparatus In General  (4,285)
8. Measuring  (4,013)
9. Testing  (4,013)
10. Investigating Or Analysing Materials By Determining Theirchemical Or Physical Properties  (3,521)
11. Separation  (3,038)
12. Lighting  (2,019)
13. Weapons  (2,019)
14. Blasting  (2,019)
15. Heating  (2,019)
16. Mechanical Engineering  (2,019)
17. Human Necessities  (1,893)
18. Disposal Of Solid Waste  (1,264)
19. Reclamation Of Contamined Soil Soil  (1,264)
20. Chemical Or Physical Processes, E.G. Catalysis Or Colloidchemistry  (1,220)
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Databases 

1. esp@cenet  (22,160)
2. USPTO Issued Patents  (829)
3. USPTO Published Applications  (62)
4. Hyper Article en Ligne (HAL) (Open Access)  (10)
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Language 

1. English  (22,900)
2. Chinese  (18,899)
3. French  (375)
4. Japanese  (214)
5. Ukrainian  (96)
6. German  (94)
7. Russian  (68)
8. Korean  (35)
9. Portuguese  (6)
10. Lithuanian  (6)
11. Spanish  (4)
12. Icelandic  (2)
13. Danish  (1)
14. Italian  (1)
15. Dutch  (1)
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