Walter Ruf
13Patents
7h-index
13Co-inventors
59Inventor score
Filing activity: Jan 27, 1975 → Nov 15, 1991
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4074507A | Bag filling machine for powdery material | Performing Operations; Transporting | 75 | Expired |
| US4253443A | Internal combustion engine ignition system | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US3961461A | Bag machine | Performing Operations; Transporting | 12 | Expired |
| US5358790A | Method for reducing the water vapour permeability of paper | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4130101A | Transistorized ignition system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US4393432A | Safety device for a conducting path in a load device | Electricity | 11 | Expired |
| US3953020A | Bag aligner machine | Performing Operations; Transporting | 8 | Expired |
| US4217874A | Ignition system using a Wiegand wire | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US4566505A | Packaging machine | Performing Operations; Transporting | 6 | Expired |
| US4526245A | Force balancing weighing system | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4407258A | Ignition and fuel injection pulse generating system for odd-numbered multi-cylinder internal combustion engine | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4100908A | Semiconductor ignition system for internal combustion engines | Mechanical Engineering; Lighting; Heating | 1 | Expired |
| US4181113A | Engine ignition system with voltage monitoring | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.