1.　This Law shall come into force after a lapse of 90 days from its promulgation. However, the provisions concerning the abolition of the provisions of Article 29 of the Imperial Petroleum Company Law shall, in case of the corporation tax on the normal incomes and the excess incomes of the Imperial Petroleum Company of each fiscal year under the Corporation Tax Law (Law No.28 of 1947), apply from the fiscal year which will end after April 1, 1950, and the provisions of paragraphs 2 to 4 inclusive of the Supplementary Provisions shall come into force as from the day of the promulgation of this Law.

2.　In case the Imperial Petroleum Company resolves to make necessary changes in its Articles of Corporation to make the matters that do not conform to the Commercial Code (Law No.48 of 1899), conform to the same Code, by the resolution of the general meeting of shareholders as provided for by Article 343 of the same Code and obtained the authorization of the competent Minister before the day of the enforcement of this Law, the Imperial Petroleum Company Law and the Law for the Improvements of Penal Regulations of Economic Relations (Law No.4 of 1944) shall not apply thereafter.

3.　With regard to the Imperial Petroleum Debenture which remained issued at the time when the Imperial Petroleum Company Law and the Law for the Improvement of Penal Regulations of Economic Relations became unapplicable by the provision of the preceding paragraph and the application of penal regulations on actions committed before that time, the precedents under the former provisions shall apply.

4.　As for the application of the provisions of Article 29 of the Imperial Petroleum Company Law with regard to the corporation tax on the Imperial Petroleum Company for the fiscal year ending on or before March 31, 1950 under the Corporation Tax Law for the normal income and the excess income for each fiscal year, the precedents under the former provisions shall apply.

5.　The Law for the Improvement of Penal Regulations of Economic Relations shall be partially amended as follows:

6.　The Registration Tax Law (Law No.27 of 1896) shall be partially amended as follows: