Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5641236 | Coupling for joining tubes | Andreas Hornung | 1997-06-24 |
| 5089339 | Aminoplast microencapsulation system | Gunter Pietsch | 1992-02-18 |
| 5011634 | Microcapsules and microcapsule production process | Gunter Pietsch | 1991-04-30 |
| 4965025 | Process for microencapsulating hydrophobic oils, the microcapsules obtained and the use thereof | Gunter Pietsch | 1990-10-23 |
| 4844711 | Hair colorants and methods of coloring hair | Udo Hoppe, Klaus Korbacher | 1989-07-04 |
| 4824823 | Microcapsules containing oils and soluble color reaction components, their manufacture and use in color reaction recording systems | Gunter Pietsch | 1989-04-25 |
| 4661115 | Hair dyeing agents | Winfred Orth, Werner Fickert | 1987-04-28 |
| 4296150 | Transparent image marking sheet for projection systems | Norbert Mecke, Franz-Ulrich Schmitt, Heinke Blutschkau | 1981-10-20 |