Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6814880 | Water based liquid foam extinguishing formulation | Robert Graf | 2004-11-09 |
| 5453212 | Powdery hydrophobic filler for bituminized traffic surfaces | Dieter Annemaier, Wilhelm Kaemereit, Oskar Schmitt | 1995-09-26 |
| 4816312 | Fire prevention material | Dieter Annemaier, Robert Graf | 1989-03-28 |