215 ILCS 5/48
The documents and papers so delivered to the Director may be approved or disapproved by the Director and the incorporators are entitled to a hearing in the same manner as provided in section 18 in the case of documents delivered for approval in connection with the organization of stock companies. If the documents and papers so delivered are approved by the Director, the Director must file in his office the bylaws, bond or securities and one of the duplicate originals of the articles of incorporation, and endorse upon the other duplicate original his approval and the month, day and year of approval and deliver it to the incorporators. The company is deemed to be fully organized on the date of the approval of the articles of incorporation by the Director, and that date is the date of incorporation of the company.
215 ILCS 5/48