| Relationships | Role | Relationship Start | Relationship End |
| Ubs Ag | Parent | 12/30/1994 | 8/26/2002 |
| Indelec Holding (Usa), Inc. | Subsidary | 12/31/1994 | 8/26/2002 |
| Boston Capital Ventures Ii | Subsidary | 12/30/1994 | 10/28/1999 |
| Phonak Holding Ag | Subsidary | 12/31/1997 | 12/30/1998 |