Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7223471 | Polytrimethylene terephthalate resins with improved properties | Eckhard Seidel, Karl-Heinz Heldmann | 2007-05-29 |
| 7029748 | Polytrimethylene terephthalate resins with improved properties | Eckhard Seidel, Karl-Heinz Heldmann | 2006-04-18 |