| 1 | HPCC | HOPE CANDLE CO LTD | | | SCAC4 |
| 2 | HPCD | Hupac Deutschland | | DE | VKM |
| 3 | HPCN | HOSEPOWER CANADA | | | SCAC4 |
| 4 | HPCO | HARPER TRUCKING COMPANY, INC | | | SCAC1 |
| 5 | HPCO | HAMPTON COMPANY INC | | | SCAC4 |
| 6 | HPCP | HEAVENER SUPPLY INC | | | SCAC4 |
| 7 | HPCS | HIGH PLAINS COOPERATIVE | | | SCAC4 |
| 8 | HPCT | HOPKINS SERVICES LTD | | | SCAC4 |
| 9 | HPCU | HUIZHOU SINGAMAS ENERGY EQUIPMENT CO,LTD. | | PRC | BIC |
| 10 | HPCX | Hercules Inc. | added 7/1966; 10/1966-7/2000; eliminated 4/2002; 7/2005 (not listed); added 10/2005 | | NAKINA |
| 11 | HPCX | Hercules Powder Co., Inc. | 7/1923-7/1965; eliminated 7/1966 | | NAKINA |
| 12 | HPCX | Hercules Powder Co. | 8/1920 | | NAKINA |
| 13 | HPCX | Hercules Powder Co., Inc. | 4/38-7/65; eliminated 7/66 | | NRHS |
| 14 | HPCX | HERCULES,INC.{HERCULES POWDER CO.] | | | PWRC |
| 15 | HPCX | Hercules | | | RSRV |
| 16 | HPCX | ASHLAND INC | | | SCAC4 |
| 17 | HPCY | HOLSUM PRODUCE COMPANY INC | | | SCAC4 |
| 18 | HPCZ | HOLLAND PAVING CO. | | | PWRC |
