Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5061637 | Process for the removal and qualitative analytical determination of cyanide in contaminated soils | Ulrich Borchardt | 1991-10-29 |
| 4765805 | Method and apparatus for removing dust and gas pollutants from waste gases, particularly waste gases produced in the manufacture of optical waveguide preforms | Erwin Walz | 1988-08-23 |