Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4764570 | Sulphonamide derivatives and their preparation and use | Steffen Piesch | 1988-08-16 |
| 4535031 | Modified aminoplast, its preparation and its use | Thomas Gotze, Steffen Piesch, Manfred Schon, Gunther Wulff, Karl Hintermeier | 1985-08-13 |
| 4533590 | Carrier materials coated with amino resin dispersions, and their further processing into laminates | Helmut Wahl | 1985-08-06 |
| 4532292 | Amino resin dispersions | Helmut Wahl | 1985-07-30 |
| 4451620 | Diethanolamine salt of sulphamic acid as a curing accelerator for aminoplast resins | Steffen Piesch | 1984-05-29 |
| RE31366 | Melamine resin, process for its manufacture and its use for the manufacture of coated wood-based materials and laminates | Steffen Piesch, Alfons Wolf | 1983-08-30 |
| 4310355 | Internal release agent for thermosetting aminoplast resins | Karl-Heinz Keil | 1982-01-12 |
| 4273669 | Latent curing agent for thermosetting aminoplast resins, its manufacture and its use | Steffen Piesch, Ewald Schmidt, Richard Hensel | 1981-06-16 |
| 4250282 | Melamine resin, process for its manufacture and its use for the manufacture of coated wood-based materials and laminates | Steffen Piesch, Alfons Wolf | 1981-02-10 |