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Creation Date 

1. Before 1960  (621)
2. 1960 To 1975  (962)
3. 1976 To 1991  (5,190)
4. 1992 To 2008  (33,367)
5. After 2008  (81,931)
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New Records 

1. New From Last Month  (2,373)
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Subject 

1. Human Necessities  (50,533)
2. Hygiene  (32,456)
3. Medical Or Veterinary Science  (32,456)
4. Physics  (30,354)
5. Chemistry  (24,137)
6. Metallurgy  (24,137)
7. Preparations For Medical, Dental, Or Toilet Purposes  (21,681)
8. Calculating  (15,693)
9. Computing  (15,693)
10. Counting  (15,693)
11. Specific Therapeutic Activity Of Chemical Compounds Ormedicinal Preparations  (13,681)
12. Electricity  (9,200)
13. Transporting  (9,096)
14. Performing Operations  (9,096)
15. Their Treatment, Not Covered By Other Classes  (8,897)
16. Foods Or Foodstuffs  (8,897)
17. Organic Chemistry  (8,791)
18. Measuring  (8,422)
19. Testing  (8,422)
20. Electric Digital Data Processing  (7,557)
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Databases 

1. esp@cenet  (101,417)
2. USPTO Issued Patents  (12,201)
3. USPTO Published Applications  (8,483)
4. Vrije Universiteit  (2)
5. SHAREOK Repository  (1)
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Language 

1. Chinese  (26,725)
2. French  (21,439)
3. German  (9,094)
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5. Russian  (3,775)
6. Japanese  (2,028)
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