Chang Liu
3Patents
2h-index
7Co-inventors
41Inventor score
Filing activity: Nov 19, 1998 → May 17, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6044733A | Screwdriver having a retractable and flexible shank | Performing Operations; Transporting | 12 | Expired |
| USD1020147S1 | Combined vacuum cleaner and holder therefor | General | 4 | Active |
| USD1033774S1 | Cleaner | General | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.