APEX MICROTECHNOLOGY, INC.
14Patents
5Active
14Granted
39Portfolio score
Filing activity: Jul 20, 1987 → Aug 13, 2019 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4871965A | Environmental testing facility for electronic components | Physics | 66 | Expired |
| US4833423A | Apparatus and method for a wide-band direct-coupled transistor amplifier | Electricity | 12 | Expired |
| US5365194A | Power operational amplifier having oscillation limiter and method therefor | Electricity | 8 | Expired |
| US6496068B1 | Multi-stage amplifier circuit | Electricity | 7 | Expired |
| US5519357A | Biasing arrangement for a quasi-complementary output stage | Electricity | 7 | Expired |
| US4808909A | Bias voltage and constant current supply circuit | Physics | 5 | Expired |
| US7339433B2 | Differential amplifier stage | Electricity | 5 | Active |
| US5210505A | Apparatus and method for an input stage of an operational amplifier | Electricity | 4 | Expired |
| US9948242B2 | Selectable current limiter circuit | Electricity | 4 | Active |
| US5142243A | Apparatus and method for an input stage of an operational amplifier | Electricity | 4 | Expired |
| US7292087B2 | Power supplies for driving H-bridges | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9592665B1 | Multiplexed multilevel converter amplifier | Electricity | 2 | Active |
| US10985713B2 | Power amplifier with a tracking power supply | Electricity | 1 | Active |
| US10957618B2 | Thermally conductive electronic packaging | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.