DBX Corporation
33Patents
0Active
33Granted
38Portfolio score
Filing activity: Nov 8, 1976 → Apr 2, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4934733A | Trailer suspension apparatus | Performing Operations; Transporting | 74 | Expired |
| US4503554A | Stereophonic balance control system | Electricity | 52 | Expired |
| US4503553A | Loudspeaker system | Electricity | 49 | Expired |
| US4878691A | Trailer suspension apparatus | Performing Operations; Transporting | 41 | Expired |
| US5016912A | Trailer suspension apparatus | Performing Operations; Transporting | 38 | Expired |
| US4588979A | Analog-to-digital converter | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4182930A | Detection and monitoring device | Electricity | 35 | Expired |
| US4177356A | Signal enhancement system | Electricity | 27 | Expired |
| US4316060A | Equalizing system | Electricity | 20 | Expired |
| US4101849A | Adaptive filter | Electricity | 19 | Expired |
| US4539526A | Adaptive signal weighting system | Electricity | 19 | Expired |
| US4220929A | Signal expander | Electricity | 18 | Expired |
| US4136314A | Adaptive signal weighting system | Electricity | 17 | Expired |
| US4182993A | Signal amplitude compression system | Electricity | 16 | Expired |
| US4377792A | Compander system | Electricity | 14 | Expired |
| US4409500A | Operational rectifier and bias generator | Electricity | 14 | Expired |
| US4124784A | Motion picture sound system | Physics | 13 | Expired |
| US4097767A | Operational rectifier | Physics | 13 | Expired |
| US4430626A | Networks for the log domain | Electricity | 13 | Expired |
| US4403199A | Gain control systems | Electricity | 12 | Expired |
| US4234804A | Signal correction for electrical gain control systems | Electricity | 9 | Expired |
| US4467287A | Signal expander | Electricity | 9 | Expired |
| US4425551A | Differential amplifier stage having bias compensating means | Electricity | 9 | Expired |
| US4112254A | Signal compander system | Electricity | 8 | Expired |
| US4471324A | All NPN variably controlled amplifier | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.