Xiaolan Ai
41Patents
11h-index
33Co-inventors
75Inventor score
Filing activity: Oct 14, 1997 → May 28, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6406399B1 | Planetary traction drive transmission | Mechanical Engineering; Lighting; Heating | 228 | Expired |
| US6095940A | Traction drive transmission | Mechanical Engineering; Lighting; Heating | 226 | Expired |
| US7000717B2 | Output power split hybrid electric drive system | Emerging Cross-Sectional Technologies | 61 | Expired |
| US6994646B2 | Electro-mechanical infinitely variable transmission | Emerging Cross-Sectional Technologies | 52 | Expired |
| US7960888B2 | Electric motor with field weakening | Electricity | 27 | Active |
| US7070530B2 | Method and apparatus for power flow management in electro-mechanical transmissions | Emerging Cross-Sectional Technologies | 23 | Expired |
| US7044877B2 | Two speed transmission with smooth power shift | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US7886858B2 | High reduction ratio electric hub drive | Mechanical Engineering; Lighting; Heating | 17 | Active |
| US6595884B1 | Continuous variable transmission | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6964627B2 | Output-split and compound-split infinitely variable transmission | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7815535B2 | Compact axial flux motor drive | Emerging Cross-Sectional Technologies | 11 | Active |
| US6354745B1 | Fully self-aligning roller bearing | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US5975762A | Tapered roller bearing with true rolling contacts | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US7153230B2 | Eccentric planetary traction drive transmission with flexible roller for adaptive self-loading mechanism | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US8536750B2 | Electric motor with axially movable rotor assembly | Electricity | 7 | Active |
| US6745882B2 | Locking clutch | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US7018316B2 | Planetary traction drive with multiple inputs | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US8647229B2 | Load split mechanism for gear transmission | Mechanical Engineering; Lighting; Heating | 5 | Active |
| US6238095A | Relieved tapered roller bearing with true rolling contacts | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US9097317B2 | Epicyclical gear transmission with improved load carrying capability | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US8176901B2 | Variable speed supercharger with electric power generation | Mechanical Engineering; Lighting; Heating | 4 | Active |
| US7669941B2 | Wheel end with load sensing capabilities | Physics | 3 | Expired |
| US8092332B2 | Three shaft friction drive unit | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US10060479B2 | Bearing and method of forming a bearing | Mechanical Engineering; Lighting; Heating | 3 | Active |
| US8747277B2 | Gear transmission load sharing mechanism | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.