Real world company prefixes

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M n O P Q R S T U V W X Y Z Ø
H& H0 H1 H2 H3 H4 H5 H6 H7 H8 H9 HA HB HC HD HE HF HG HH HI HJ HK HL HM HN HO HP HQ HR HS HT HU HV HW HX HY HZ
HPA HPC HPD HPE HPF HPG HPH HPI HPJ HPK HPL HPM HPN HPO HPP HPR HPS HPT HPU HPW HPX HPY
HPCC HPCD HPCN HPCO HPCP HPCS HPCT HPCU HPCX HPCY HPCZ
1 HPCX Hercules Inc. added 7/1966; 10/1966-7/2000; eliminated 4/2002; 7/2005 (not listed); added 10/2005   NAKINA
2 HPCX Hercules Powder Co., Inc. 7/1923-7/1965; eliminated 7/1966   NAKINA
3 HPCX Hercules Powder Co. 8/1920   NAKINA
4 HPCX Hercules Powder Co., Inc. 4/38-7/65; eliminated 7/66   NRHS
5 HPCX HERCULES,INC.{HERCULES POWDER CO.]     PWRC
6 HPCX Hercules     RSRV
7 HPCX ASHLAND INC     SCAC4