Qingfeng Yu
13Patents
9h-index
17Co-inventors
65Inventor score
Filing activity: Jul 15, 2004 → Feb 3, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9493997B2 | Floating clamping device for injection head of continuous oil pipe | Fixed Constructions | 154 | Active |
| US9617808B2 | Continuous oil pipe clamp mechanism | Fixed Constructions | 154 | Active |
| USD924336S1 | Game board | General | 44 | Active |
| USD924980S1 | Unicorn shaped game board | General | 36 | Active |
| USD944332S1 | Toy | General | 34 | Active |
| USD948630S1 | Toy | General | 22 | Active |
| US9626577B1 | Image selection and recognition processing from a video feed | Physics | 14 | Active |
| US8396737B2 | Website analysis combining quantitative and qualitative data | Physics | 10 | Active |
| US9367736B1 | Text detection using features associated with neighboring glyph pairs | Physics | 10 | Active |
| US9576210B1 | Sharpness-based frame selection for OCR | Physics | 9 | Active |
| US9418316B1 | Sharpness-based frame selection for OCR | Physics | 8 | Active |
| US8572233B2 | Method and system for site path evaluation using web session clustering | Physics | 1 | Active |
| US11850618B2 | Nozzle assembly, ejecting device and ejecting method | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.