Yi Chang
12Patents
3h-index
12Co-inventors
57Inventor score
Filing activity: Mar 4, 1999 → Sep 29, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6082623A | Cooling system and method for a portable computer | Electricity | 28 | Expired |
| US8803183B2 | LED heat-conducting substrate and its thermal module | Electricity | 4 | Active |
| US11126069B2 | Projector and optical module including extending wire | Physics | 3 | Active |
| US8653695B2 | Power switching device and method thereof, and projection device using the power switching device | Physics | 2 | Active |
| US11194241B2 | Optical module | Electricity | 1 | Active |
| US11237465B2 | Optical module and projector with same | Electricity | 1 | Active |
| US11477420B2 | Illumination system and projection device | Physics | 0 | Active |
| US11422447B2 | Illumination system, projection device and color wheel calibrating method | Physics | 0 | Active |
| US10728509B2 | Projector, optical engine module, image resolution enhancement device and driving method thereof | Physics | 0 | Active |
| US11209723B2 | Optical module and projector | Electricity | 0 | Active |
| US11442346B2 | Illumination device, projection system and operation methods thereof | Physics | 0 | Active |
| US11500279B2 | Optical module and projection apparatus | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.