Qinggao Ma
13Patents
3h-index
23Co-inventors
60Inventor score
Filing activity: Dec 17, 2003 → Mar 7, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7569630B2 | β-Crystalline polypropylenes | Chemistry; Metallurgy | 24 | Active |
| US7553896B2 | Ortho-nitrosophenols as polymerization inhibitors | Chemistry; Metallurgy | 7 | Active |
| US7838703B2 | Diaromatic amine derivatives as antioxidants | Chemistry; Metallurgy | 5 | Active |
| US8580716B2 | Overbased magnesium oxide dispersions | Chemistry; Metallurgy | 3 | Active |
| US7847125B2 | Acridan derivatives as antioxidants | Chemistry; Metallurgy | 1 | Active |
| US11952551B2 | Gear oil composition | Emerging Cross-Sectional Technologies | 1 | Active |
| US7608568B2 | Tetraaromatic diamine compounds as antioxidants | Chemistry; Metallurgy | 1 | Active |
| US7846884B2 | Lubricating oil compositions | Chemistry; Metallurgy | 1 | Active |
| US7585909B2 | β-crystalline polypropylenes | Chemistry; Metallurgy | 1 | Active |
| US8648020B2 | Pressure process for overbased magnesium oxide dispersions | Chemistry; Metallurgy | 0 | Active |
| US12344812B2 | Gear oil composition | Emerging Cross-Sectional Technologies | 0 | Active |
| US7217765B2 | Styrenic polymer composites | Chemistry; Metallurgy | 0 | Expired |
| US7572849B2 | Urea phenyl derivatives and their use as polypropylene nucleating agents | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.