Legal Opinion
Johnston Formation Testing Corp. v. Halliburton
Court of Appeals for the Fifth Circuit
Decided January 9, 1937No. 7991PublishedCited by 5 opinions
1Opinion of the Court
SIBLEY, Circuit Judge.
Erie P. Halliburton and Halliburton Well Cementing Company, sued Johnston Formation Testing Corporation and E. C. Johnston for infringement of patent No. 1,930,987, which was applied for by John T. Simmons, alleged inventor, February 10, 1926, but not granted till October 17, 1933. Simmons before applying for the patent assigned an interest to Henderson, but within three months after the application was filed they had assigned first partially and then wholly to Halliburton. The patent covers a method and an apparatus for testing the productivity of formations encountered…
2Cases cited3 opinions
- Edwards v. Johnston Formation Testing CorporationCourt of Appeals for the Fifth Circuit · 1932
- Edwards v. Johnston Formation Testing Corp.District Court, S.D. Texas · 1930
- Halliburton v. Honolulu Oil Corp.District Court, S.D. California · 1936
3Cited by5 opinions
- Honolulu Oil Corp. v. HalliburtonSupreme Court of the United States · 1939
- Butex Gas Co. v. Southern Steel Co.Court of Appeals for the Fifth Circuit · 1941
- The J. R. Clark Company v. Murray Metal Products Company, Inc., Murray Metal Products Company, Inc. v. The J. R. Clark CompanyCourt of Appeals for the Fifth Circuit · 1955
- Eastman Oil Well Survey Co. v. Sperry-Sun Well Surveying Co.Court of Appeals for the Fifth Circuit · 1942
- Otis Pressure Control, Inc. v. Guiberson Corp.Court of Appeals for the Fifth Circuit · 1940