Norbert Pieper
18Patents
7h-index
33Co-inventors
66Inventor score
Filing activity: Jan 18, 1985 → Mar 27, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8191555B2 | Inhalation unit | Human Necessities | 40 | Active |
| US5725425A | Sensor system for controlling ventilation systems in vehicles | Fixed Constructions | 29 | Expired |
| US4782718A | Fly-wheel unit for an internal-combustion engine | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US7190256B2 | Security method for gaining access, access verification device, and elevator | Performing Operations; Transporting | 21 | Expired |
| US6570500B1 | Infra-sound surveillance system | Physics | 19 | Expired |
| US6061843A | Method for automatically triggering a flushing event | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4809830A | Torque transmitting torsional vibration damper device | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US8550773B2 | Steam turbine having bearing struts | Mechanical Engineering; Lighting; Heating | 6 | Active |
| US5793645A | Method of operating a ventilation system especially of a motor vehicle | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6505136B1 | Method of testing an evaluation circuit | Physics | 2 | Expired |
| US8713941B2 | Method for operating a multi-step steam turbine | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US4640398A | Friction clutch with tangential leaf springs | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US8776520B2 | Method and device for operating a steam power station comprising a steam turbine and a process steam consumer | Emerging Cross-Sectional Technologies | 1 | Active |
| US8621866B2 | Steam power unit | Emerging Cross-Sectional Technologies | 1 | Active |
| US8387388B2 | Turbine blade | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US7518509B2 | Method and device for securing objects | Physics | 0 | Active |
| US9267394B2 | Steam turbine plant with variable steam supply | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US9574462B2 | Method for operating a power plant installation | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.