Helmut Heizmann
4Patents
3h-index
7Co-inventors
39Inventor score
Filing activity: Sep 15, 1989 → May 31, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5713432A | Drive frame for a self-propelled elevator car | Performing Operations; Transporting | 15 | Expired |
| US5636712A | Apparatus for driving a self-propelled elevator | Performing Operations; Transporting | 12 | Expired |
| US5769183A | Drive unit for a self-propelled elevator car | Performing Operations; Transporting | 9 | Expired |
| US5022281A | Arrangement for preselecting and shifting a motor vehicle gear shift transmission | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.