Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7278776 | Apparatus and method for injecting a liquid dye into a polymer melt | Ulrich Helbing, Georg Stausberg, Jörg Alexander | 2007-10-09 |
| 6315537 | Spin pump having a cooling sleeve surrounding the drive shaft | Ulrich Helbing, Egon Gathmann, Thomas E. Kramer | 2001-11-13 |