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Creation Date 

1. Before 1960  (240)
2. 1960 To 1976  (152)
3. 1977 To 1992  (7,184)
4. 1993 To 2009  (34,376)
5. After 2009  (59,372)
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New Records 

1. New From Last Week  (59)
2. New From Last Month  (2,224)
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Subject 

1. Physics  (35,679)
2. Electricity  (24,293)
3. Transporting  (22,255)
4. Performing Operations  (22,255)
5. Calculating  (21,135)
6. Computing  (21,135)
7. Counting  (21,135)
8. Human Necessities  (17,744)
9. Electric Communication Technique  (15,744)
10. Electric Digital Data Processing  (12,972)
11. Lighting  (11,049)
12. Weapons  (11,049)
13. Blasting  (11,049)
14. Heating  (11,049)
15. Mechanical Engineering  (11,049)
16. Hygiene  (10,465)
17. Medical Or Veterinary Science  (10,465)
18. Transmission Of Digital Information, E.G. Telegraphiccommunication  (8,639)
19. Measuring  (7,690)
20. Testing  (7,690)
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Databases 

1. esp@cenet  (96,165)
2. USPTO Published Applications  (2,651)
3. USPTO Issued Patents  (2,523)
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Language 

1. English  (85,135)
2. French  (80,660)
3. German  (10,228)
4. Chinese  (6,810)
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6. Korean  (1,179)
7. Spanish  (549)
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