Ping Chang
6Patents
3h-index
4Co-inventors
50Inventor score
Filing activity: Jun 29, 1990 → Apr 22, 2010
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5326321A | Adjusting device for adjusting the instantaneous relative angular difference between two rotating members | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US5012064A | Electron beam evaporation source | Electricity | 5 | Expired |
| US5861599A | Rod-fed electron beam evaporation system | Chemistry; Metallurgy | 3 | Expired |
| US8926755B2 | Lift-off deposition system featuring a density optimized HULA substrate holder in a conical deposition chamber | Chemistry; Metallurgy | 1 | Active |
| US5905753A | Free-standing rotational rod-fed source | Chemistry; Metallurgy | 0 | Expired |
| US7764008B2 | Electron beam gun | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.