|
| US4089927 | 1 nov. 1976 | 16 mai 1978 | Minnesota Mining and Manufacturing Company | Strain sensor employing bi layer piezoelectric polymer |
| US4141021 | 14 févr. 1977 | 20 févr. 1979 | Varian Associates, Inc. | Field effect transistor having source and gate electrodes on opposite faces of active layer |
| US4359767 | 27 févr. 1981 | 16 nov. 1982 | Siemens Aktiengesellschaft | Ultrasonic array |
| US4378510 | 17 juil. 1980 | 29 mars 1983 | Motorola Inc. | Miniaturized accelerometer with piezoelectric FET |
| US4740829 | 3 déc. 1986 | 26 avr. 1988 | Canon Kabushiki Kaisha | Semiconductor device having a thin layer comprising germanium atoms as a matrix with a restricted range of hydrogen atom concentration |
| US4767973 | 6 juil. 1987 | 30 août 1988 | Sarcos Incorporated | Systems and methods for sensing position and movement |
| US4814842 | 25 mai 1988 | 21 mars 1989 | Canon Kabushiki Kaisha | Thin film transistor utilizing hydrogenated polycrystalline silicon |