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Creation Date 

1. Before 1960  (54)
2. 1960 To 1975  (79)
3. 1976 To 1990  (323)
4. 1991 To 2006  (16,989)
5. After 2006  (138,656)
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New Records 

1. New From Last Month  (4,332)
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Subject 

1. Physics  (51,230)
2. Electricity  (50,925)
3. Electric Communication Technique  (43,231)
4. Calculating  (35,759)
5. Computing  (35,759)
6. Counting  (35,759)
7. Transmission Of Digital Information, E.G. Telegraphiccommunication  (27,864)
8. Electric Digital Data Processing  (25,302)
9. Transporting  (19,183)
10. Performing Operations  (19,183)
11. Wireless Communications Networks  (17,320)
12. Fixed Constructions  (9,412)
13. Measuring  (8,901)
14. Testing  (8,901)
15. Human Necessities  (8,295)
16. Lighting  (6,686)
17. Weapons  (6,686)
18. Blasting  (6,686)
19. Heating  (6,686)
20. Mechanical Engineering  (6,686)
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Databases 

1. esp@cenet  (120,230)
2. USPTO Issued Patents  (18,449)
3. USPTO Published Applications  (17,413)
4. Fraunhofer-ePrints  (6)
5. SWEPUB Freely available online  (2)
6. Calhoun: The NPS Institutional Archive  (1)
7. Universidade do Porto Institutional Repository Open Access  (1)
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Language 

1. English  (148,242)
2. Chinese  (34,746)
3. French  (24,840)
4. German  (12,291)
5. Japanese  (5,927)
6. Korean  (3,977)
7. Spanish  (1,227)
8. Russian  (803)
9. Portuguese  (645)
10. Hebrew  (372)
11. Polish  (126)
12. Swedish  (113)
13. Danish  (96)
14. Italian  (86)
15. Norwegian  (83)
16. Finnish  (81)
17. Dutch  (65)
18. Romanian  (57)
19. Ukrainian  (45)
20. Bulgarian  (40)
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