Alexander Hahn
42Patents
12h-index
72Co-inventors
84Inventor score
Filing activity: Sep 19, 2000 → Sep 18, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6997684B2 | Fan motor with digital controller for applying substantially constant driving current | Electricity | 42 | Expired |
| US6452349B1 | Electronically commutated motor | Electricity | 39 | Expired |
| US6825632B2 | Direct current machine with a controllable arrangement for limiting current | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US7319300B2 | Method of operating an electronically commutated motor, and method for carrying out such a method | Electricity | 37 | Active |
| US6906484B1 | Method for limiting the current in an electric motor, and a motor for carrying out one such method | Electricity | 37 | Expired |
| US6496786B1 | Method and apparatus for measuring a frequency datum | Electricity | 33 | Expired |
| US6831431B1 | Method for regulating the rotational speed of a motor and a motor for carrying out a method of this type | Electricity | 18 | Expired |
| USD728438S1 | Instrument panel for media and navigation systems | General | 17 | Active |
| USD774430S1 | Instrument panel for media and navigation systems | General | 17 | Active |
| US6982534B2 | Method for operating an electronically commutated motor, and motor for carrying out one such method | Electricity | 15 | Expired |
| USD754043S1 | Instrument panel for media and navigation systems | General | 14 | Active |
| US9453507B2 | Metering system | Mechanical Engineering; Lighting; Heating | 12 | Active |
| US6967459B2 | Method for controlling or regulating the current in a direct current machine for a fan | Electricity | 10 | Expired |
| US8339001B2 | Electronically commutated motor with nested radially stepped busbars | Electricity | 10 | Active |
| US6906486B2 | Electronically commutated motor | Electricity | 9 | Expired |
| US7292028B2 | Apparatus for sensing the absolute-value angle of a shaft | Physics | 8 | Expired |
| US7042182B2 | Electronically commutated motor operable directly from AC power network | Electricity | 5 | Expired |
| US7444070B2 | Fan motor with digital controller for applying substantially constant driving current | Electricity | 5 | Active |
| US6940243B2 | Method for commutating an electronically commutated DC motor, and motor for carrying out said method | Electricity | 4 | Expired |
| US9318979B2 | Converter arrangement having a filter | Electricity | 3 | Active |
| US7211916B2 | Arrangement with an electric motor | Electricity | 3 | Expired |
| US7500857B2 | Arrangement with a contact element | Electricity | 2 | Expired |
| US10185485B2 | Method and apparatus for providing a graphical user interface in a vehicle | Performing Operations; Transporting | 2 | Active |
| US10765043B2 | Heat exchanger for an electrical component in a motor vehicle and production method | Emerging Cross-Sectional Technologies | 1 | Active |
| US10677059B2 | Rotary pump with deformable pump ring | Mechanical Engineering; Lighting; Heating | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.