Delta Electronics, Inc.
3,337Patents
2,630Active
3,337Granted
64Portfolio score
Filing activity: Oct 19, 1981 → Feb 13, 2025 · 566 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6301128A | Contactless electrical energy transmission system | Emerging Cross-Sectional Technologies | 413 | Expired |
| US6611130B2 | Zero voltage, zero current switching power factor correction converter with low conduction loss and low switching loss | Emerging Cross-Sectional Technologies | 219 | Expired |
| US6934167B2 | Contactless electrical energy transmission system having a primary side current feedback control and soft-switched secondary side rectifier | Emerging Cross-Sectional Technologies | 149 | Expired |
| US5959438A | Soft-switched boost converter with isolated active snubber | Emerging Cross-Sectional Technologies | 139 | Expired |
| US5736842A | Technique for reducing rectifier reverse-recovery-related losses in high-voltage high power converters | Emerging Cross-Sectional Technologies | 136 | Expired |
| US6246599A | Constant frequency resonant inverters with a pair of resonant inductors | Emerging Cross-Sectional Technologies | 115 | Expired |
| US8299773B2 | System and method for limiting input-current surge in a switching mode power supply | Emerging Cross-Sectional Technologies | 100 | Active |
| US5991172A | AC/DC flyback converter with improved power factor and reduced switching loss | Emerging Cross-Sectional Technologies | 98 | Expired |
| US6356462B1 | Soft-switched full-bridge converters | Emerging Cross-Sectional Technologies | 88 | Expired |
| US6947300B2 | Parallel DC-to-AC power inverter system with current sharing technique and method thereof | Electricity | 88 | Expired |
| US6261109A | Fastener for all-purpose power supply sockets | Electricity | 86 | Expired |
| US6344979B1 | LLC series resonant DC-to-DC converter | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6051961A | Soft-switching cell for reducing switching losses in pulse-width-modulated converters | Emerging Cross-Sectional Technologies | 77 | Expired |
| US6392902B1 | Soft-switched full-bridge converter | Emerging Cross-Sectional Technologies | 71 | Expired |
| US6388898B1 | Dc/dc power processor with distributed rectifier stage | Electricity | 67 | Expired |
| USD681794S1 | Exhaust fan with LED | General | 63 | Active |
| US8593245B2 | Coil assembly and magnetic element with shielding function | Electricity | 63 | Active |
| US6739723B1 | Polarization recapture system for liquid crystal-based data projectors | Electricity | 61 | Expired |
| US6081425A | Miniaturizing power supply system for portable computers by improving heat dissipation therein | Physics | 60 | Expired |
| USD880513S1 | Display screen with graphical user interface | General | 60 | Active |
| USD487800S1 | Fan | General | 55 | Expired |
| US6049473A | Harmonic-injection control technique for three-phase, discontinuous-conduction-mode, high-power-factor boost rectifiers with improved line-transient response | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6538906B1 | Energy storage circuit for DC-DC converter | Electricity | 55 | Expired |
| US8729718B2 | Thermomagnetic generator | Electricity | 53 | Active |
| US7605570B2 | Bridgeless PFC converter with low common-mode noise and high power density | Emerging Cross-Sectional Technologies | 51 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.