Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4329381 | Method for providing corrosion resistance to metal objects | Helmut Eschwey, Renate Galinke, nee Jansen, heir, Heinrich Linden, Bernd Wegemund, Norbert Wiemers | 1982-05-11 |
| 4233194 | Water-dispersed film-forming lacquer containing air-drying alkyd resins and an ethylene oxide adduct of an unsaturated aliphatic-substituted phenol | Helmut Eschwey, Norbert Wiemers | 1980-11-11 |
| 4221685 | Water-dispersed film-forming lacquer containing air-drying alkyd resins and ethylene oxide adducts of hydrophobic compounds | Helmut Eschwey, Norbert Wiemers | 1980-09-09 |