Ralf Schafer
37Patents
8h-index
41Co-inventors
75Inventor score
Filing activity: Nov 25, 1983 → Feb 3, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6766366B1 | Method for loading a function provided by a first computer (server) onto a second computer (client) | Electricity | 21 | Expired |
| US4812736A | Circuit arrangement for operating high-pressure gas discharge lamps | Emerging Cross-Sectional Technologies | 20 | Expired |
| US4594531A | Circuit arrangement for operating high-pressure gas discharge lamps | Emerging Cross-Sectional Technologies | 15 | Expired |
| US5014618A | Sensor based inking control for a printing press | Emerging Cross-Sectional Technologies | 14 | Expired |
| US5736811A | Capped high-pressure discharge lamp | Electricity | 12 | Expired |
| US5742114A | Lamp envelope with a metal clamping member and a fixation member | Electricity | 10 | Expired |
| US4795943A | High-pressure sodium vapor discharge lamp | Electricity | 8 | Expired |
| US5113085A | Circuit arrangement for supplying a load | Electricity | 8 | Expired |
| US4539513A | Circuit arrangement for starting and operating a high-pressure gas discharge lamp | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4714862A | Circuit arrangement for igniting and operating gas discharge lamps | Electricity | 6 | Expired |
| US4888524A | Circuit for operating gas discharge lamps with a periodically alternating lamp current | Electricity | 6 | Expired |
| US4994716A | Circuit arrangement for starting and operating gas discharge lamps | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5654608A | Capped electric lamp | Electricity | 5 | Expired |
| US4891563A | Circuit arrangement for adjusting the operating voltage of high-pressure gas discharge lamps | Electricity | 5 | Expired |
| US9452451B2 | Cleaning device and cleaning brush for an atomizer and corresponding cleaning method | Performing Operations; Transporting | 5 | Active |
| US8958983B2 | Method of processing positioning data | Physics | 5 | Active |
| US5117340A | Lighting device | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US4748381A | Circuit arrangement for A.C. operation of gas discharge lamps | Emerging Cross-Sectional Technologies | 4 | Expired |
| US9685076B2 | Generating segment data | Physics | 3 | Active |
| US4816721A | Circuit arrangement for operating a high-pressure gas discharge lamp | Electricity | 3 | Expired |
| US5025197A | Circuit arrangement for A.C. operation of high-pressure gas discharge lamps | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9620007B2 | Method of generating expected average speeds of travel | Physics | 2 | Active |
| US9829332B2 | Method and machine for generating map data and a method and navigation device for determining a route using map data | Physics | 2 | Active |
| US5039916A | Operating circuit for a high-pressure discharge lamp | Emerging Cross-Sectional Technologies | 1 | Expired |
| US9952057B2 | Method of processing positioning data | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.