Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5762807 | Composition and process for treating water and gas streams containing heavy metals and other pollutants | — | 1998-06-09 |
| 5451327 | Compound and method for treating water containing metal ions and organic and/or inorganic impurities | — | 1995-09-19 |
| 5419834 | Precipitating agent for the precipitation of heavy metals | — | 1995-05-30 |
| 5372726 | Compound for the treatment of water polluted with metal ions, process for its production and application | — | 1994-12-13 |
| 4952910 | Warning triangle for motor vehicles | Klaus Kiefer | 1990-08-28 |
| 4843719 | Pair of measuring compasses | — | 1989-07-04 |