Refine My Results

Creation Date 

1. Before 1960  (560)
2. 1960 To 1975  (12,893)
3. 1976 To 1991  (65,169)
4. 1992 To 2008  (184,611)
5. After 2008  (273,426)
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New Records 

1. New From Last Month  (7,946)
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Subject 

1. Devices Using Stimulated Emission  (383,925)
2. Semiconductor Devices  (161,184)
3. Electric Solid State Devices Not Otherwise Provided For  (161,184)
4. Technical Subjects Covered By Former Uspc Cross-Reference Art Collections [xracs] And Digests  (157,176)
5. General Tagging Of Cross-Sectional Technologies Spanning Over Several Sections Of The Ipc  (157,176)
6. General Tagging Of New Technological Developments  (157,176)
7. Technologies Or Applications For Mitigation Or Adaptation Againstclimate Change  (153,929)
8. Physics  (141,058)
9. Optics  (99,050)
10. Optical Elements, Systems, Or Apparatus  (73,374)
11. Transporting  (52,842)
12. Performing Operations  (52,842)
13. Chemistry  (52,748)
14. Metallurgy  (52,748)
15. Processes Or Means, E.G. Batteries, For The Direct Conversionof Chemical Into Electrical Energy  (47,444)
16. Climate Change Mitigation Technologies In The Production Orprocessing Of Goods  (37,687)
17. Frequency-Changing  (37,172)
18. Non-Linear Optics  (37,172)
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Language 

1. English  (472,236)
2. Chinese  (92,043)
3. French  (89,057)
4. German  (66,593)
5. Japanese  (30,263)
6. Korean  (26,837)
7. Russian  (3,916)
8. Spanish  (1,291)
9. Italian  (1,181)
10. Swedish  (936)
11. Portuguese  (554)
12. Norwegian  (514)
13. Danish  (508)
14. Dutch  (501)
15. Polish  (468)
16. Finnish  (308)
17. Ukrainian  (221)
18. Romanian  (130)
19. Lithuanian  (125)
20. Czech  (119)
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