| MEDALLION OIL COMPANY, Colorado Authority Relinquished February 7, 2007Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Jun 5, 1978 | Withdrawn |
| SANCHEZ OIL & GAS CORPORATION, Colorado Authority Relinquished April 27, 2017Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Jun 28, 1978 | Withdrawn |
| WESTLAND ROYALTY CO., Dissolved May 31, 2005Location not reported, CO · Voluntarily Dissolved | Location not reported, CO | Corporation | May 14, 1969 | Voluntarily Dissolved |
| SUNSHINE GARBAGE, INC.Location not reported, CO · Merged | Location not reported, CO | Corporation | Apr 29, 1971 | Merged |
| WASTE MANAGEMENT OF COLORADO, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 1, 1963 | Good Standing |
| SAN MARCO PIPELINE COMPANY, Dissolved March 31, 2005Location not reported, CO · Voluntarily Dissolved | Location not reported, CO | Corporation | Dec 23, 1976 | Voluntarily Dissolved |
| A & W WATER SERVICE, INC.Location not reported, CO · Merged | Location not reported, CO | Corporation | Apr 27, 1977 | Merged |
| RYDER SCOTT COMPANY PETROLEUM ENGINEERS, Colorado Authority Terminated August 6, 1999Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Jan 4, 1980 | Withdrawn |
| ENCO, INCORPORATED, Colorado Authority Relinquished December 9, 2013Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Mar 24, 1980 | Withdrawn |
| N G P L - TRAILBLAZER INC., Colorado Authority Terminated May 20, 2002Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Apr 2, 1980 | Withdrawn |
| ENRON TRAILBLAZER PIPELINE COMPANY, Colorado Authority Terminated May 15, 2003Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | May 6, 1980 | Withdrawn |
| MID-AMERICA PIPELINE COMPANY, LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Feb 2, 1981 | Good Standing |
| WYOMING GAS SUPPLY, INC., Colorado Authority Relinquished November 7, 2006Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Feb 10, 1981 | Withdrawn |
| AMERICAN EQUITY INVESTMENT LIFE INSURANCE COMPANYLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Jul 13, 1981 | Good Standing |
| MOBIL AUTO CLUB INC., Colorado Authority Relinquished September 6, 2011Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Sep 2, 1981 | Withdrawn |
| PLAINS RESOURCES INC., Colorado Authority Terminated March 3, 2004Location not reported, CO · Revoked | Location not reported, CO | Corporation | Sep 8, 1981 | Revoked |
| KBR Construction Company, LLCLocation not reported, CO · Good Standing | Location not reported, CO | LLC | Sep 30, 1981 | Good Standing |
| Wyoming Interstate Company, L.L.C.Location not reported, CO · Good Standing | Location not reported, CO | LLC | Nov 4, 1981 | Good Standing |
| CIG OVERTHRUST, INC., Colorado Authority Terminated March 4, 2003Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Jul 21, 1982 | Withdrawn |
| EPWP Resources Company, Colorado Authority Relinquished May 4, 2010Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Jul 28, 1982 | Withdrawn |
| MONTROSE PARTNERS, LTD., Colorado Authority Relinquished April 3, 2013Location not reported, CO · Withdrawn | Location not reported, CO | Partnership | Sep 9, 1982 | Withdrawn |
| CONSERVATION SERVICES, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | May 18, 1983 | Good Standing |
| WHITING OIL AND GAS CORPORATIONLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Dec 13, 1983 | Good Standing |
| ARKLA INDUSTRIES, INC., Colorado Authority Relinquished August 27, 2010Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Dec 20, 1983 | Withdrawn |
| KRITI EXPLORATION, INC., Colorado Authority Terminated May 20, 2002Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Apr 27, 1984 | Withdrawn |
| COCKSPUR, INC., Colorado Authority Terminated September 15, 2000Location not reported, CO · Revoked | Location not reported, CO | Corporation | Oct 5, 1984 | Revoked |
| WASTE MANAGEMENT OF NEW MEXICO, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Apr 1, 1985 | Good Standing |
| WASTE MANAGEMENT DISPOSAL SERVICES OF COLORADO, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Nov 5, 1985 | Good Standing |
| Q LUBE, INC., Colorado Authority Relinquished March 3, 2008Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Nov 8, 1985 | Withdrawn |
| GDHI LIMITED PARTNERSHIPLocation not reported, CO · Good Standing | Location not reported, CO | Partnership | Feb 24, 1986 | Good Standing |
| Enerplus Resources (USA) CorporationLocation not reported, CO · Good Standing | Location not reported, CO | Corporation | Jun 27, 1986 | Good Standing |
| ENRON GAS LIQUIDS, INC., Colorado Authority Terminated April 4, 2003Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Aug 28, 1986 | Withdrawn |
| WASTE MANAGEMENT GEOTECH, INC., Colorado Authority Terminated March 1, 1999Location not reported, CO · Revoked | Location not reported, CO | Corporation | Sep 5, 1986 | Revoked |
| MCGRAW-EDISON COMPANY, Colorado Authority Terminated December 10, 2003Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Sep 29, 1986 | Withdrawn |
| EOG RESOURCES, INC.Location not reported, CO · Good Standing | Location not reported, CO | Corporation | Nov 24, 1986 | Good Standing |
| COASTAL MART, INC., Colorado Authority Relinquished April 4, 2011Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Mar 16, 1987 | Withdrawn |
| CENTENNIAL EXPRESS AIRLINES, INC., Dissolved April 1, 2004Location not reported, CO · Administratively Dissolved | Location not reported, CO | Corporation | Jun 19, 1987 | Administratively Dissolved |
| JIFFY LUBE INTERNATIONAL OF MARYLAND, INC., Colorado Authority Relinquished March 3, 2008Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Jul 21, 1987 | Withdrawn |
| GLOBAL NATURAL RESOURCES CORPORATION OF NEVADALocation not reported, CO · Merged | Location not reported, CO | Corporation | Jul 31, 1987 | Merged |
| MOBIL PETROCHEMICAL SALES AND SUPPLY CORPORATION, Colorado Authority Terminated April 29, 2002Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Sep 22, 1987 | Withdrawn |
| EL PASO CGP GAS TRANSMISSION COMPANY, Colorado Authority Relinquished September 4, 2009Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Oct 26, 1987 | Withdrawn |
| GS METALS CORP., Colorado Authority Relinquished August 3, 2009Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Nov 3, 1987 | Withdrawn |
| AMERAC ENERGY CORPORATIONLocation not reported, CO · Merged | Location not reported, CO | Corporation | Dec 1, 1987 | Merged |
| EOG Y Resources, Inc., Colorado Authority Relinquished January 4, 2019Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Apr 25, 1988 | Withdrawn |
| THE M. W. KELLOGG COMPANYLocation not reported, CO · Merged | Location not reported, CO | Corporation | Sep 9, 1988 | Merged |
| ENRON ENGINEERING & CONSTRUCTION COMPANY, Colorado Authority Terminated March 17, 2004Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Sep 19, 1988 | Withdrawn |
| ARROWHEAD AT VAIL, INC., Colorado Authority Terminated December 5, 2003Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Oct 26, 1988 | Withdrawn |
| EL PASO MERCHANT ENERGY - PETROLEUM COMPANY, Colorado Authority Relinquished September 8, 2011Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | Nov 10, 1988 | Withdrawn |
| JIFFY LUBE INTERNATIONAL, INC.Location not reported, CO · Merged | Location not reported, CO | Corporation | Dec 19, 1988 | Merged |
| SITHE ENERGIES POWER SERVICES, INC., Colorado Authority Relinquished November 17, 2006Location not reported, CO · Withdrawn | Location not reported, CO | Corporation | May 1, 1989 | Withdrawn |