Legal Opinion
Wolf Mineral Process Corp. v. Minerals Separation North American Corp.
Court of Appeals for the Fourth Circuit
Decided April 12, 1927No. 2557PublishedCited by 26 opinions
1Opinion of the Court
PARKER, Circuit Judge.
The appellant, Wolf Mineral Process Corporation, complainant in the court below, is the assignee of a certain patent, No. 787,814, issued to one J. D. Wolf, covering a mineral separation process which involves the flotation of metal partieles by the buoyancy of oil. It also holds by assignment the rights claimed by Wolf in the patent of defendant, Minerals Separation North American Corporation. Defendant is the assignee of patent No. 835,-120, issued to Henry Livingstone Sulman, Hugh Eitzalis Kirkpatriek-Pieard, and John Ballot, covering the froth flotation process of…
2Cases cited16 opinions
- Southern Pacific Railroad v. United StatesSupreme Court of the United States · 1897
- La BourgogneSupreme Court of the United States · 1908
- Hammond v. HopkinsSupreme Court of the United States · 1892
- Minerals Separation, Ltd. v. HydeSupreme Court of the United States · 1916
- Hayward v. National BankSupreme Court of the United States · 1878
11 more not listed; retrieve them via the Exa API.
3Cited by26 opinions
- SCA Hygiene Products Aktiebolag v. First Quality Baby Products, LLCSupreme Court of the United States · 2017
- Robert I. Powell v. Eugene M. ZuckertCourt of Appeals for the D.C. Circuit · 1966
- Gillons v. Shell Co. of CaliforniaCourt of Appeals for the Ninth Circuit · 1936
- Barnhart v. Western Maryland Ry. Co.Court of Appeals for the Fourth Circuit · 1942
- Fidelity-Phenix Fire Ins. Co. of New York v. Benedict Coal Corp.Court of Appeals for the Fourth Circuit · 1933
21 more not listed; retrieve them via the Exa API.