Erich Hell
62Patents
19h-index
28Co-inventors
84Inventor score
Filing activity: May 15, 1991 → Mar 26, 2012
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6339635B1 | X-ray tube | Electricity | 134 | Expired |
| US5576549A | Electron generating assembly for an x-ray tube having a cathode and having an electrode system for accelerating the electrons emanating from the cathode | Electricity | 111 | Expired |
| US5841831A | X-ray computed tomography apparatus | Human Necessities | 73 | Expired |
| US5812632A | X-ray tube with variable focus | Electricity | 58 | Expired |
| US8266923B2 | Refrigerating device comprising two storage compartments with selective cooling modes | Mechanical Engineering; Lighting; Heating | 58 | Active |
| US7886559B2 | Modular refrigerator | Mechanical Engineering; Lighting; Heating | 57 | Active |
| US6419389B1 | X-ray generating system having a phase change material store located in the coolant in an x-ray radiator housing | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6292538A | X-ray tube with flying focus | Electricity | 38 | Expired |
| US5822395A | X-ray apparatus having an x-ray tube with vario-focus | Electricity | 37 | Expired |
| US5548630A | X-ray radiator having an electron source for sending a beam of electrons along an elongated anode | Electricity | 34 | Expired |
| US6396901B1 | X-ray emitter with force-cooled rotating anode | Electricity | 31 | Expired |
| US5528658A | X-ray tube having an annular vacuum housing | Electricity | 31 | Expired |
| US6646366B2 | Directly heated thermionic flat emitter | Electricity | 28 | Expired |
| US5940469A | Multi-chromatic x-ray source | Electricity | 27 | Expired |
| US6141400A | X-ray source which emits fluorescent X-rays | Electricity | 26 | Expired |
| US6181771A | X-ray source with selectable focal spot size | Electricity | 26 | Expired |
| US6178226A | Method for controlling the electron current in an x-ray tube, and x-ray system operating according to the method | Electricity | 25 | Expired |
| US5633906A | X-ray computed tomography apparatus of the electron beam type with electron beam intensity measuring capacity | Physics | 24 | Expired |
| US7588340B2 | Refrigerating appliance comprising an internal OLED lighting system | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5703924A | X-ray tube with a low-temperature emitter | Electricity | 19 | Expired |
| US6084942A | Rotating bulb x-ray radiator with non-pumped coolant circulation | Electricity | 19 | Expired |
| US5504791A | Annular anode x-ray computed tomography apparatus with a single magnet system for guiding and deflecting the electron beam | Electricity | 17 | Expired |
| US6709156B1 | Cooling device and computed tomography apparatus employing same | Electricity | 16 | Expired |
| US6412979B1 | Computed tomography system with arrangement for cooling the x-ray radiator mounted on a rotating gantry | Human Necessities | 16 | Expired |
| US6426997B1 | X-ray tube with warning device for accurately indicating impending failure of the thermionic emitter | Electricity | 15 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.