Refine My Results

Creation Date 

1. Before 1960  (159,523)
2. 1960 To 1975  (276,144)
3. 1976 To 1991  (1,095,444)
4. 1992 To 2008  (1,956,400)
5. After 2008  (5,111,216)
6. More options 

New Records 

1. New From Last Month  (18,558)
2. New From Last 3 Month  (241,690)
3. More options 

Subject 

1. Lighting  (3,025,726)
2. Weapons  (3,025,726)
3. Blasting  (3,025,726)
4. Heating  (3,025,726)
5. Mechanical Engineering  (3,025,726)
6. Transporting  (2,755,638)
7. Performing Operations  (2,755,638)
8. Chemistry  (1,723,124)
9. Metallurgy  (1,723,124)
10. Electricity  (1,534,727)
11. Machine Tools  (1,226,823)
12. Metal-Working Not Otherwise Provided For  (1,226,823)
13. Working By Laser Beam  (1,176,548)
14. Soldering Or Unsoldering  (1,176,548)
15. Welding  (1,176,548)
16. Cutting By Applying Heat Locally, E.G. Flame Cutting  (1,176,548)
17. Cladding Or Plating By Soldering Or Welding  (1,176,548)
18. Liquefaction Solidification Of Gases  (1,041,539)
19. Combined Heating And Refrigeration Systems  (1,041,539)
20. Heat Pump Systems  (1,041,539)
21. More options 

Databases 

1. esp@cenet  (8,240,698)
2. USPTO Published Applications  (218,422)
3. USPTO Issued Patents  (159,999)
4. Fraunhofer-ePrints  (471)
5. Calhoun: The NPS Institutional Archive  (9)
6. SHAREOK Repository  (4)
7. PolyU Institutional Research Archive  (3)
8. Spiral  (2)
9. Hyper Article en Ligne (HAL) (Open Access)  (1)
10. White Rose Research Repository  (1)
11. UAB Digital Repository  (1)
12. More options 

Language 

1. English  (7,489,100)
2. Chinese  (2,766,616)
3. French  (913,293)
4. German  (755,247)
5. Korean  (379,991)
6. Japanese  (346,389)
7. Russian  (110,312)
8. Spanish  (99,669)
9. Portuguese  (44,894)
10. Italian  (41,911)
11. Swedish  (26,271)
12. Danish  (19,077)
13. Finnish  (15,803)
14. Polish  (15,569)
15. Dutch  (14,675)
16. Norwegian  (14,274)
17. Ukrainian  (8,761)
18. Czech  (5,294)
19. Romanian  (4,639)
20. Turkish  (4,222)
21. More options