| 1 | ATPX | American Tar Products Co., Inc. | 7/1930-7/1932 | | NAKINA |
| 2 | ATPX | American Tar Products Co., Inc. (Koppers Products Co.) | 7/1935-7/1936 | | NAKINA |
| 3 | ATPX | Koppers Co. | 7/1937-1/1941 | | NAKINA |
| 4 | ATPX | American Tar Products Co. | 8/1920-7/1923 | | NAKINA |
| 5 | ATPX | American Tar Products Co., Inc. (Koppers Co.) | Apr-38 | | NRHS |
| 6 | ATPX | KOPPERS CO. {AMERICAN TAR PRODUCTS CO.} | | | PWRC |
