Minerals Separation North American Corp. v. Magma Copper Co.

This is a suit for the infringement of Letters Patent, No. 962678, Claims 1 and 2, brought by the-petitioner in the District Court of Maine, where the petitioner prevailed, 23 F. (2d) 931, the Court acting partly in deference to the decision of the Circuit Court of Appeals for the Third Circuit in Miami Copper Co. v. Minerals Separation, Ltd., 244 Fed. 752. The decision of the District Court was reversed by the Circuit Court of Appeals for the First Circuit, 30 F. (2d) 67, and because of the conflict with the Third Circuit, a writ of certiorari was granted by this Court.

The claims are (1) for…