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| Invention | Inventor | Year | Patent No. |
| Transistor (Bipolar Junction Transistor - BJT) | John Bardeen &
William Shockley &
Walter Brattain | 1947 | US2,524,035
US2,569,347 |
| FET - Field Effect Transistor | Julius Edgar Lilienfeld | 1928 | US1,745,175 |
| HEMT - High Electron Mobility Transistor | Takashi Mimura | 1980 | US4,424,525
US-RE33,584 |
| IGBT - Insulated Gate Bipolar Transistor | Jayant B. Baliga | 1984 | US4,620,211 |
| JFET - Junction Field-Effect Transistor | William Shockley
G. C. Dacey & I. M. Ross | 1952
1953 | |
| MESFET - Metal-Semiconductor Field Effect Transistor | Carver Mead | 1965 | |
| MOSFET - Metal-Oxide Semiconductor Field-Effect Transistor | John Atalla | 1960 | |
| OFET - Organic Field Effect Transistor | | | |
| TFT - Thin-Film Transistor | Anne Chiang | 1987-1994 | |
| Darlington Transistor Pair | Sidney Darlington | 1952 | US2,663,806 |
| Compound Transistor | | | |
| Photo Transistor | | 1958 | |
| RHET - Resonant tunneling Hot Electron Transistor | N. Yokoyama | 1980s | |
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