As filed with the Securities and Exchange Commission on May 21, 1998 Registration No. 333-36923 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 POST-EFFECTIVE AMENDMENT NO. 1 to Form S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 AMOCO COMPANY (Exact name of registrant as specified in its charter) DELAWARE 200 E. Randolph Drive 36-3353184 (State or other jurisdiction of Chicago, Illinois 60601 (I.R.S. Employer incorporation or organization) (312-856-6111) Identification No.) (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) AMOCO CORPORATION (Exact name of additional registrant as specified in its charter) INDIANA 200 E. Randolph Drive 36-1812780 (State or other jurisdiction of Chicago, Illinois 60601 (I.R.S. Employer incorporation or organization) (312-856-6111) Identification No.) (Address, including zip code, and telephone number, including area code, of registrant's principal executive offices) S. F. GATES , ESQ. Vice President and General Counsel Amoco Corporation 200 E. Randolph Drive Chicago, Illinois 60601 (312-856-5474) (Name, address, including zip code, and telephone number, including area code, of agent for service for registrants) Copy for: GLENN M. REITER, ESQ. JOHN E. RILEY, ESQ. Simpson Thacher & Bartlett 425 Lexington Avenue New York, New York 10017 This Post-Effective Amendment No. 1 to Form S-3 Registration Statement shall hereinafter become effective in accordance with the provisions of Section 8(c) of the Securities Act of 1933. Amoco Company, a Delaware corporation (the "Company"), and Amoco Corporation, an Indiana corporation ("Amoco"), hereby file this Post-Effective Amendment No. 1 to the Registration Statement on Form S-3 under the Securities Act of 1933, filed by the Registrants under Registration File No. 333-36923 (the "Registration Statement"), which was declared effective on November 10, 1997, for the purpose of removing from registration the $500,000,000 of Guaranteed Debt Securities and Warrants to Purchase Guaranteed Debt Securities and the related Guarantees of such Debt Securities which were registered pursuant to the Registration Statement, but have not been offered or sold. Amoco and the Company no longer intend to offer the registered securities under the Registration Statement and therefore desire to remove such securities from registration. SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment to Registration Statement on Form S-3 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Chicago, State of Illinois, on May 21,1998. AMOCO COMPANY (Registrant) By /s/ J. L. CARL J. L. Carl President Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to Registration Statement on Form S-3 has been signed by the following persons in the capacities indicated on May 21,1998. Signature Title /s/ J. L. CARL* President and Director (Principal Executive Officer) (J. L. Carl) /s/ W. R. HUTCHINSON* Vice President, Treasurer and Director (Principal Financial Officer) (W. R. Hutchinson) /s/ A. J. NOCCHIERO Vice President and Controller (Principal Accounting Officer) (A. J. Nocchiero) /s/ D. B. PINKERT* Vice President, Assistant Secretary and Director (D. B. Pinkert) *By /s/ J. L. CARL Individually and as Attorney-in-Fact J. L. Carl SIGNATURES Pursuant to the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-3 and has duly caused this Post-Effective Amendment to Registration Statement on Form S-3 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Chicago, State of Illinois, on May 21,1998. AMOCO CORPORATION (Registrant) By /s/ J. L. CARL J. L. Carl Executive Vice President and Chief Financial Officer Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to Registration Statement on Form S-3 has been signed by the following persons in the capacities indicated on May 21,1998. Signature Title /s/ H. L. FULLER* Chairman of the board, Chief Executive Office and Director (H. L. Fuller) (Principal Executive Officer) /s/ W. G. LOWRIE* President and Director (W. G. Lowrie) /s/ J. L. CARL* Executive Vice President and Chief Financial Officer (Principal Financial Officer) (J. L. Carl) /s/ A. J. NOCCHIERO Vice President and Controller (Principal Accounting Officer) (A. J. Nocchiero) /s/ D. R. BEALL* Director (D. R. Beall) /s/ RUTH BLOCK* Director (Ruth Block) /s/ J. H. BRYAN* Director (J. H. Bryan) /s/ E. B. DAVIS, JR* Director (E. B. Davis, Jr.) /s/ RICHARD FERRIS* Director (Richard Ferris) /s/ F. A. MALJERS* Director (F. A. Maljers) /s/ A. C. MARTINEZ* Director (A. C. Martinez) /s/ W. E. MASSEY* Director (W. E. Massey) /s/ MARTHA R. SEGER* Director (Martha R. Seger) /s/ T. M. SOLSO* Director (T. M. Solso) /s/ MICHAEL WILSON* Director (Michael Wilson) *By /s/ J. L. CARL Individually and as Attorney-in-Fact J. L. Carl