Auergesellschaft GmbH
42Patents
0Active
42Granted
36Portfolio score
Filing activity: Mar 27, 1975 → Sep 13, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5133347A | Mouthpiece valve for breathing equipment | Human Necessities | 172 | Expired |
| US5016627A | Lung-governed valve | Human Necessities | 59 | Expired |
| US5669375A | Breathing mask | Human Necessities | 55 | Expired |
| US5191882A | Apparatus for enabling a strapless breathing mask to be worn without a protective helmet | Human Necessities | 45 | Expired |
| US4873970A | Warning device to indicate the state of gases exhaustion of a gas filter retaining dangerous gases | Human Necessities | 45 | Expired |
| US4088461A | Combination of a supplementary filter and respirator filter | Emerging Cross-Sectional Technologies | 33 | Expired |
| US4231360A | Nose clip for respirators | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4174710A | Connection between two different parts of a person's protective covering | Human Necessities | 20 | Expired |
| US4361146A | Filtering respirator | Human Necessities | 17 | Expired |
| US6429165B1 | Polymer-bonded material | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5222479A | Oxygen self-rescuer apparatus | Human Necessities | 17 | Expired |
| US4197841A | Respirator with protective cover | Human Necessities | 15 | Expired |
| US4811728A | Respirator hood | Human Necessities | 13 | Expired |
| US4022578A | Detector tube | Physics | 11 | Expired |
| US4123934A | Bridge circuit arrangement for a gas detection instrument | Physics | 11 | Expired |
| US4157091A | Respirator | Human Necessities | 11 | Expired |
| US6083439A | Polymer-bonded material | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5046198A | Gas goggles | Human Necessities | 10 | Expired |
| US4459981A | Breathing bag for closed cycle respirator | Human Necessities | 10 | Expired |
| US4375768A | Electronic circuit for processing the measured values from a vortex sequence produced by a Karman vortex path | Physics | 9 | Expired |
| US3968793A | Clamping ring for the window frame of a breathing mask | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4840170A | Self-rescuer apparatus | Human Necessities | 8 | Expired |
| US4577348A | Gas-tight protective garment with hood | Human Necessities | 8 | Expired |
| US5267558A | Chemical cartridge for respirators | Human Necessities | 8 | Expired |
| US6920879B2 | Compressed air breathing apparatus | Performing Operations; Transporting | 7 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.