This directory aims at historical review only and does not claim to provide actual information.
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
| Isar-Rakoll Chemie GesmbH & Co KG | Kaplanstraße 30 | 4600 | Wels | 11.02.1977 | revocable |
| Interwell Wellpappe GesmbH | Schellingstr. 40 | 4053 | Haid bei Ansfelden | 01.07.1988 | revocable |
| INTERSPORT AUSTRIA Gesellschaft m.b.H. | Flugplatzstraße 10 | 4600 | Wels | vor 2006 | revocable |
| Interplastic-Werk Gesellschaft m.b.H. | Kaiser-Josef-Platz 12 | 4600 | Wels | 30.06.1980 | revocable |
| Internorm Kounsttofffenster Gesellschaft mbH | Ganglgutstr. 131 | 4050 | Traun | 05.05.1980 | revocable |
| Ing. Hager Installations Gesellschaft m.b.H. | Wirerstraße 5 | 4820 | Bad Ischl | vor 2006 | revocable |
| Ideal Kältetechnik GesmbH | In der Schörihub 28 | 4810 | Gmunden | 18.01.2001 | revocable |
| Company Name | Address | Postcode | Place | Awarded on | Type of award |
