DRAGERWERK AKTIEGESELLSCHAFT
534Patents
0Active
534Granted
45Portfolio score
Filing activity: Jan 18, 1974 → Jun 1, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4750520A | Electrically-actuable valve | Emerging Cross-Sectional Technologies | 375 | Expired |
| US5029805A | Valve arrangement of microstructured components | Mechanical Engineering; Lighting; Heating | 360 | Expired |
| US5507412A | Centralized multichannel fluid delivery system | Human Necessities | 209 | Expired |
| US5353789A | A flaccid mask with straps and a supporting element that force the mask into sealing engagement with the wearer's face in response to force exerted by the straps on the supporting element | Human Necessities | 201 | Expired |
| US5038772A | Closed-cycle breathing equipment | Human Necessities | 158 | Expired |
| US5065978A | Valve arrangement of microstructured components | Mechanical Engineering; Lighting; Heating | 152 | Expired |
| US5601078A | Breathing apparatus with a display unit | Physics | 140 | Expired |
| US5647351A | Ventilating system for supplying a patient with respiratory gas and method for triggering the respiratory phases in said system | Human Necessities | 136 | Expired |
| US5678539A | Respirator with an input and output unit | Human Necessities | 134 | Expired |
| US4265237A | Apparatus for enhancing a person's breathing and/or artificial respiration | Human Necessities | 133 | Expired |
| US5303700A | Method for detecting the respiratory phases of a patient during an assisted ventilating process | Human Necessities | 125 | Expired |
| US4905683A | Respirator mask for positive pressure respirator equipment | Human Necessities | 122 | Expired |
| US5322059A | Breathing mask with flow indicator for the respiration air | Human Necessities | 121 | Expired |
| US6367472B1 | Respiration humidifier | Human Necessities | 119 | Expired |
| US4484576A | Apparatus for admixing liquid anesthetics and respiratory gas | Emerging Cross-Sectional Technologies | 117 | Expired |
| US4630606A | Device for determining and evaluating the pressure in a balloon sleeve of a closed tracheal tube | Human Necessities | 110 | Expired |
| US3948269A | Cryomedical device | Human Necessities | 103 | Expired |
| US5140519A | Method for monitoring patient data and circuit arrangement therefor | Human Necessities | 98 | Expired |
| US5094235A | Anesthesia ventilating apparatus having a breathing circuit and control loops for anesthetic gas components | Human Necessities | 95 | Expired |
| US4470413A | Protective breathing apparatus including a mask and mouthpiece | Human Necessities | 93 | Expired |
| US4111197A | Respiratory device coupling construction | Mechanical Engineering; Lighting; Heating | 90 | Expired |
| US4326513A | Patient data controlled respiration system | Human Necessities | 88 | Expired |
| US4637386A | Ventilation system having true valve control for controlling ventilation pressures | Emerging Cross-Sectional Technologies | 88 | Expired |
| US5876352A | Process for determining the mechanical properties of the respiratory system of a respirated patient and device for carrying out the process | Human Necessities | 87 | Expired |
| US4378011A | Lung controlled pressure gas respirator for use with an oxygen mask and valving mechanism therefor | Emerging Cross-Sectional Technologies | 86 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.