Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4996054 | Antithrombogenic, non-calcifying material and method of making articles for medical purposes | Hanns Pietsch, Holger Kartheus, Gunther Sachau, Helmut Reul | 1991-02-26 |
| 4831065 | Antithrombogenic, non-calcifying material and method of making articles for medical purposes | Hanns Pietsch, Holger Kartheus, Gunther Sachau, Helmut Reul | 1989-05-16 |
| 4778461 | Heart valve prosthesis and process for its production | Hanns Pietsch, Holger Kartheus, Gunther Sachau, Helmut Reul | 1988-10-18 |