Michael Steffen
34Patents
9h-index
24Co-inventors
75Inventor score
Filing activity: Jun 24, 1993 → Aug 17, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6123158A | Electric tool with ducted cooled control electronics | Electricity | 68 | Expired |
| US6285925A | Method and safety device for the remote-control of self-propelling working machines | Physics | 42 | Expired |
| US7432725B2 | Electrical field sensors for detecting fluid presence or level | Physics | 20 | Expired |
| US6213681A | Soil compacting device with adjustable vibration properties | Emerging Cross-Sectional Technologies | 20 | Expired |
| US7025183B2 | Pneumatic spring percussion mechanism with an electro-dynamically actuated driving piston | Performing Operations; Transporting | 18 | Expired |
| US5450068A | Infrared remote control for soil compacting devices | Physics | 14 | Expired |
| US6435767B1 | Directional controls for vibrating plate | Fixed Constructions | 12 | Expired |
| US6223871A | Cable drum with integrated frequency converter | Emerging Cross-Sectional Technologies | 10 | Expired |
| US7753621B2 | Vibrating plate comprising a remote control that is integrated into a draw bar | Fixed Constructions | 9 | Active |
| US6084327A | Internal vibrator supplied with current from a transformer | Fixed Constructions | 8 | Expired |
| US6507799B2 | Method and apparatus for reducing microprocessor speed requirements in data acquisition applications | Textiles; Paper | 8 | Expired |
| US5415494A | Process for determining and indicating the degree of ground compacting attained during work with a ground compacter | Physics | 8 | Expired |
| US6474300B1 | Device and method for controlling the speed of an internal combustion engine | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6892950B1 | Type plate comprising a storage device | Physics | 6 | Expired |
| US8905625B2 | High flow water return fitting for swimming pools and spas | Fixed Constructions | 6 | Active |
| US6735066B2 | Protective device for an electric consumer | Electricity | 5 | Expired |
| US7498932B1 | Oil level monitoring system for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6997648B2 | Remote control device for automotive working devices | Physics | 5 | Expired |
| US6651608B2 | Manually operated working device having a speed that is adjusted automatically | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6619832B1 | Poker vibrator with frequency converter | Fixed Constructions | 5 | Expired |
| US6530359B1 | Generating unit with engine speed control device | Electricity | 4 | Expired |
| US6794632B1 | Soil compaction device having a light detector | Physics | 4 | Expired |
| US9175447B2 | Soil compactor having direct drive | Emerging Cross-Sectional Technologies | 3 | Active |
| US6733169B2 | Poker vibrator with frequency transformer | Fixed Constructions | 2 | Expired |
| US6960013B2 | High frequency immersion vibrator comprising a cooled electronic frequency converter | Fixed Constructions | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.