Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334323 | Deicing or antiicing fluids for aircraft | Hans Schrimpf, Hans U. Krebs, Guenter Frey | 1994-08-02 |
| 5064552 | Nitrite- and phosphate-free antifreeze based on glycol | Knut Oppenlaender, Juergen Mohr, Guenter Frey | 1991-11-12 |
| 4827008 | Preparation of alkoxysilanes containing a low level of chlorine compounds | Charalampos Gousetis, Knut Oppenlaender, Guenter Frey | 1989-05-02 |
| 4810404 | Nitrite- and phosphate-free glycol-based coolant mixtures | Charalampos Gousetis, Knut Oppenlaender, Guenter Frey | 1989-03-07 |
| 4629602 | Phosphosilicone/silicate copolymers and their use as corrosion inhibitors and silicate stabilizers in antifreezes | Charalampos Gousetis, Knut Oppenlaender, Klaus Pfitzner | 1986-12-16 |
| 4324675 | Protective additive for radiators in coolants containing water | Klaus Barthold | 1982-04-13 |