| 1 | IVOX | Sco Tank Line, Inc. | 7/1937 (not listed) | | NAKINA |
| 2 | IVOX | The International Vegetable Oil Co., Inc. | 7/1930-7/1935 | | NAKINA |
| 3 | IVOX | The International Vegetable Oil Co. | 8/1920-7/1923 | | NAKINA |
| 4 | IVOX | *INTERNATIONAL VEGETABLE OIL CO. | | | PWRC |
| 5 | IVOX | *SCO TANK LINE, INC. | | | PWRC |
