Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297544 | Respirator with inner half mask and pollutant indicator | Wolfgang May, Wolfgang Bather, Gerhold Muhmel | 1994-03-29 |
| 5113856 | Impregnation for respirator filters filled with active carbon | — | 1992-05-19 |
| 5036842 | Respirator with blower support and regeneration of the breathing filter | Wolfgang Eckstein, Hans-Joachim Walther | 1991-08-06 |
| 4997803 | CO.sub.2 adsorbent mass | Kai vom Hofe, Herbert Rohl, Horst Wezurek | 1991-03-05 |
| 4822572 | Chemical oxygen generator | Rainer Ernst, Wolfgang Eckstein | 1989-04-18 |
| 4807614 | Protective hood | Holmer Rohling | 1989-02-28 |
| 4795611 | Indicator for the determination of chlorine gas | — | 1989-01-03 |
| 4731197 | Potassium superoxide pellet | Wolfgang Eckstein, Rainer Ernst, Bernhard Westrup | 1988-03-15 |
| 4677096 | Air cleaning material for use in air filters | — | 1987-06-30 |
| 4636485 | Filter comprising a catalyst on a substrate for purification of air | — | 1987-01-13 |
| 4623637 | Process for producing a catalyst for oxidizing carbon monoxide and air filter produced by the process | — | 1986-11-18 |
| 4591399 | Igniting mixture for chemical oxygen generators | Rainer Ernst | 1986-05-27 |
| 4277443 | Air purifying cartridges for respirators | Gerd Pantaleon-Stemberg | 1981-07-07 |