Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4936861 | Acetabular cup prosthesis | Otto Frey, Roland Willi | 1990-06-26 |
| 4813960 | Endoprosthesis for a hip joint socket | — | 1989-03-21 |
| 4784662 | Artificial hip joint | — | 1988-11-15 |
| 4661112 | Hip joint prosthesis | — | 1987-04-28 |
| 4576152 | Injector for bone cement | Otto Frey | 1986-03-18 |
| 4530115 | Shank for a prosthesis | Peter Niederer, Otto Frey | 1985-07-23 |
| 4310931 | Hip joint prosthesis | — | 1982-01-19 |