| Relationships | Role | Relationship Start | Relationship End |
| Degussa Ag | Parent | 4/1/1993 | 12/8/1997 |
| Cerdec Corporation | Subsidary | 4/1/1993 | 12/8/1997 |
| Relationships | Role | Relationship Start | Relationship End |
| Degussa Ag | Parent | 4/1/1993 | 12/8/1997 |
| Cerdec Corporation | Subsidary | 4/1/1993 | 12/8/1997 |