Refine My Results

Creation Date 

1. Before 1976  (24)
2. 1976 To 1988  (40)
3. 1989 To 1999  (129)
4. 2000 To 2011  (551)
5. After 2011  (1,433)
6. More options 

Subject 

1. Electricity  (1,032)
2. Physics  (519)
3. Performing Operations  (472)
4. Transporting  (471)
5. Vehicles In General  (399)
6. Conversion Or Distribution Of Electric Power  (370)
7. Generation  (370)
8. Electric Communication Technique  (326)
9. Electrodynamic Brake Systems For Vehicles, In General  (310)
10. Electric Equipment Or Propulsion Of Electrically-Propelledvehicles  (310)
11. Magnetic Suspension Or Levitation For Vehicles  (310)
12. Control Or Regulation Thereof  (217)
13. Conversion Of Dc Or Ac Input Power Into Surge Outputpower  (217)
14. Basic Electronic Circuitry  (215)
15. Code Conversion In General  (189)
16. Decoding  (189)
17. Coding  (189)
18. Basic Electric Elements  (179)
19. Circuit Arrangements Or Systems For Supplying Or Distributingelectric Power  (155)
20. Systems For Storing Electric Energy  (155)
21. More options 

Databases 

1. esp@cenet  (1,829)
2. USPTO Issued Patents  (185)
3. USPTO Published Applications  (162)
4. More options 

Language 

1. English  (1,877)
2. Korean  (378)
3. Chinese  (307)
4. French  (231)
5. Portuguese  (148)
6. German  (130)
7. Japanese  (68)
8. Russian  (16)
9. Spanish  (11)
10. Hungarian  (3)
11. Polish  (3)
12. Dutch  (3)
13. Swedish  (3)
14. Norwegian  (2)
15. Bulgarian  (2)
16. Hebrew  (2)
17. Danish  (2)
18. Czech  (1)
19. Italian  (1)
20. Slovenian  (1)
21. More options