Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5125514 | Recognizing unwanted material in textile fibers | Reinhard Oehler, Robert Demuth, Peter Anderegg | 1992-06-30 |
| 4740086 | Apparatus for the photoacoustic detection of gases | Klaus Mosbach, Martin Seifert, Heinrich Kunz, Niels Kuster | 1988-04-26 |
| 4657397 | Light collector and its use for spectroscopic purposes | David Sourlier, Alexis Fries | 1987-04-14 |
| 4557603 | Detection means for the selective detection of gases, based on optical spectroscopy | Alexis Fries | 1985-12-10 |