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Creation Date 

1. Before 1959  (400,640)
2. 1959 To 1973  (251,685)
3. 1974 To 1988  (497,565)
4. 1989 To 2004  (865,238)
5. After 2004  (1,828,634)
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Resource Type 

1. Patents  (3,858,034)
2. Articles  (5)
3. More options 

Subject 

1. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (3,858,034)
2. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (3,858,034)
3. General Tagging Of New Technological Developments  (3,858,034)
4. Technical Subjects Covered By Former Uspc  (2,071,439)
5. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (1,871,477)
6. Technical Subjects Covered By Former Us Classification  (1,510,558)
7. Transporting  (1,366,210)
8. Performing Operations  (1,366,210)
9. Lighting  (1,072,389)
10. Weapons  (1,072,389)
11. Blasting  (1,072,389)
12. Heating  (1,072,389)
13. Mechanical Engineering  (1,072,389)
14. Chemistry  (978,449)
15. Metallurgy  (978,448)
16. Electricity  (723,453)
17. Technical Subjects Covered By Former Uspc Cross-Reference Artcollections [xracs] And Digests  (695,436)
18. Physics  (585,865)
19. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (576,832)
20. Basic Electric Elements  (470,758)
21. More options 

Databases 

1. esp@cenet  (3,858,034)
2. ROAD: Directory of Open Access Scholarly Resources  (4)
3. ProQuest Central  (4)
4. DOAJ Directory of Open Access Journals  (4)
5. PubMed Central  (3)
6. Geneva Foundation Free Medical Journals at publisher websites  (2)
7. Coronavirus Research Database  (1)
8. SpringerOpen  (1)
9. MEDLINE  (1)
10. More options 

Language 

1. English  (3,367,725)
2. French  (563,383)
3. Chinese  (503,917)
4. German  (468,785)
5. Korean  (113,016)
6. Japanese  (79,009)
7. Russian  (47,182)
8. Spanish  (42,960)
9. Portuguese  (26,447)
10. Swedish  (20,110)
11. Italian  (12,539)
12. Dutch  (11,610)
13. Finnish  (8,522)
14. Danish  (8,472)
15. Norwegian  (4,823)
16. Polish  (4,635)
17. Romanian  (2,169)
18. Ukrainian  (2,076)
19. Czech  (1,836)
20. Turkish  (852)
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Journal Title 

1. Aerospace  (1)
2. F1000 Research  (2)
3. Micromachines  (1)
4. Scientometrics  (1)
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