Dick Chang
9Patents
7h-index
2Co-inventors
49Inventor score
Filing activity: Jun 29, 1987 → Jun 19, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7097593B2 | Combination of treadmill and stair climbing machine | Human Necessities | 74 | Expired |
| USD306642S | Housing for an outdoor coil of an air conditioning system | General | 33 | Expired |
| US7819779B2 | Combination of treadmill and stair climbing machine | Human Necessities | 22 | Active |
| US4748827A | Coil support structure | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US5036674A | Accumulator mounting method and apparatus | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4748828A | Self-draining base pan for an air conditioner | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6746374B2 | Folding device for treadmills | Human Necessities | 7 | Expired |
| US6746376B2 | Folding structure for treadmill | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7140485B1 | Lubrication device for endless belt of treadmills | Human Necessities | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.