Qiankun Ma
11Patents
8h-index
2Co-inventors
51Inventor score
Filing activity: Jan 18, 2007 → Oct 22, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD580489S1 | Dual-tip highlighter | General | 43 | Expired |
| USD597598S1 | Highlighter | General | 25 | Expired |
| USD605700S1 | Pen | General | 21 | Expired |
| USD595351S1 | Highlighter | General | 16 | Expired |
| USD572760S1 | Marker | General | 15 | Expired |
| USD602088S1 | Pen | General | 15 | Expired |
| USD609746S1 | Marker | General | 10 | Expired |
| USD572759S1 | Pen | General | 8 | Expired |
| USD602083S1 | Pen | General | 6 | Expired |
| USD605696S1 | Highlighter | General | 5 | Expired |
| USD609747S1 | Pen | General | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.