COXE, District Judge.
This is a suit hy the United States to enjoin Masonite Corporation, Celotex Corporation and eight other corporations from further alleged violations of the Sherman and Clayton anti-trust laws, 15 U.S.C.A. §§ 1, 2 & 14.
The complaint charges that in the manufacture and distribution of “hardboard”, a synthetic wood product, the defendants have been, and still are, engaged in a conspiracy (1) to restrain trade in violation of Section 1 of the Sherman Act, 15 U.S.C.A. § 1; and (2) to monopolize trade in violation of Section 2 of the same Act, 15 U.S.C.A. § 2. It is also charged that various agreements between the defendants are in violation of Section 3 of the Clayton Act, 15 U.S.C.A. § 14.
The case was tried largely on agreed facts. These were supplemented by some oral and some stipulated testimony. There is, however, no serious dispute .with respect to any of the essential facts.
The principal attack of the Government concerns the alleged violation by the defendants of Section 1 of the Sherman Act, 15 U.S.C.A. §. 1.
The term “hardboard” is widely understood to mean the patented product manufactured by Masonite Corporation under the basic Mason patent, No. 1,663,505, issued March 20, 1928; this product is to be distinguished from insulation board, which is a softer board produced in different ways by various manufacturers, and not directly involved in the present litigation.
Hardboard is a homogeneous, hard, dense, grainless fiber board product made from wood or woody material. It is used in the building industry as wall board, for decorative panelling, for exterior covering, for waterproof panelling in kitchens and bathrooms, for flooring and sub-flooring, for ceilings, and for forms into which concrete is poured; in addition, it has found increasing use in other industries, such as the furniture, toy, advertising, pleasure boat, automobile and motion picture industries.
In 1925, Mason, the inventor of hardboard, was instrumental in organizing the Masonite Corporation (then called Mason Fibre Company) to exploit the invention. This corporation established a manufacturing plant at Laurel, Mississippi, and it was there that the first commercial production of hardboard took place in 1926. Since then, the annual production at the Laurel plant has greatly increased the net dollar volume in 1940 amounting to $7,821,797.55.
The Celotex Company (predecessor of the present defendant Celotex Corporation) was, as far back as 1920, a pioneer in the development of structural insulation; it had a large plant at Marrero, Louisiana, where its insulation products and other building materials were manufactured, and it distributed these products through a vast number of local lumber dealers throughout the country.
In or about 1929, the Celotex Company started the manufacture at its Marrero plant of a hard panel board made from bagasse, a sugar cane fiber, which it proceeded to sell in competition with the Masonite hardboard. The Masonite Corporation at once charged the Celotex Company with infringement of a number of its patents, including patent No. 1,663,505, and in 1931 instituted suit against the Celotex Company in the District Court in Delaware for infringement of patent No. 1,663,505. This suit was bitterly contested by the Celotex Company, and resulted in a decision by the Circuit Court of Appeals for the Third Circuit on July 6, 1933, holding two product and four process claims of the patent valid and infringed. Masonite Corporation v. Celotex Co., 66 F.2d 451. The Masonite Corporation was thus left with a final decision adjudicating the validity of a number of basic claims of the patent, and construing these claims with a sufficient breadth to cover the Celotex product made from bagasse.
While the infringement suit was pending, the Celotex Company went into the hands of receivers, and the business was still being conducted by the receivers when the decision of the Circuit Court of Appeals came down on July 6, 1933. The problem then confronting the Celotex receivers was a serious one, for it was realized that if the decision stood, the Celotex Company would be cut off from a supply of hard panel board to round out its line bf building products, and it would have to face a large claim by the Masonite Corporation for damages and profits. It was also felt that there was little chance that the decision would be reviewed by the Supreme Court because of the absence of conflicting