Young-Sik Lee
39Patents
8h-index
44Co-inventors
75Inventor score
Filing activity: Aug 16, 1994 → Sep 30, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5546300A | Zero voltage switching controller of resonance mode converter and electronic ballast using the same | Emerging Cross-Sectional Technologies | 61 | Expired |
| US5774321A | Power supply circuit with load protection function | Electricity | 22 | Expired |
| US5718373A | System for controlling automobile cooling fan | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US5675239A | Voltage balancing circuit | Physics | 16 | Expired |
| US5699238A | Zero voltage switching controller of resonance mode converter and electronic ballast using the same | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5915667A | Proportional solenoid valve control system | Electricity | 13 | Expired |
| US5703750A | Proportional solenoid valve control system | Physics | 12 | Expired |
| US5796277A | Power-transistor driving circuit for a single power source | Electricity | 9 | Expired |
| US5721474A | Method and apparatus for preventing excessive current flow in a motor | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7400890B2 | Method for decision of time delay by repeater in mobile communication network | Physics | 4 | Expired |
| US7212157B2 | Method for creating acquisition assistance information in assisted global positioning system | Physics | 4 | Expired |
| US8390345B2 | Apparatus and method for generating ramp waveform | Physics | 3 | Active |
| US7486029B2 | Circuit for detecting end of life of fluorescent lamp | Physics | 3 | Active |
| US9804801B2 | Hybrid memory device for storing write data based on attribution of data stored therein | Physics | 3 | Active |
| US7639636B2 | Method of searching for broadcasting channel of specific program in a DMB receiving terminal | Electricity | 2 | Active |
| US8415891B2 | Lamp ballast circuit and driving method thereof | Electricity | 2 | Active |
| US9374002B2 | Switch control circuit, coupled inductor boost converter including the same, and driving method of the coupled inductor boost converter | Electricity | 1 | Active |
| US10846019B2 | Semiconductor device | Physics | 1 | Active |
| US9565304B2 | Method and apparatus for providing audio content, user terminal and computer readable recording medium | Physics | 1 | Active |
| US9609427B2 | User terminal apparatus, electronic device, and method for controlling the same | Electricity | 1 | Active |
| US8487602B2 | Switch driving circuit and driving method thereof | Electricity | 1 | Active |
| US8735371B2 | Compositions and methods for altering RNAi | Chemistry; Metallurgy | 1 | Active |
| US8035743B2 | Method for processing data in a terminal with digital broadcasting receiver | Electricity | 0 | Active |
| US12032832B2 | Storage device and operating method thereof | Physics | 0 | Active |
| US11667916B2 | Composition for preventing or treating liver fibrosis, containing exosome or exosome-derived ribonucleic acid | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.