Legal Opinion
National Pigments & Chemical Co. v. Shreveport Chemical Co.
District Court, W.D. Louisiana
Decided August 22, 1932No. 367PublishedCited by 2 opinions
1Opinion of the Court
DAWKINS, District Judge.
This is a suit for direct and contributory infringement of letters patent No. 1,575,945, covering an improvement in the application of mud-laden fluids to oil and gas wells, alleged to have been invented by one Ben K. Stroud, whose rights thereunder are now claimed by the plaintiff as assignee. The petition charges that the infringement consists in the manufacture, sale, and offering for sale mud bases and mud heaviers, and the combinations and ingredients thereof, made according to and embodying the invention contained in said patent, particularly barium sulphate;…
2Cases cited12 opinions
- Carbice Corp. of America v. American Patents Development Corp.Supreme Court of the United States · 1931
- Western & Atlantic Railroad v. HendersonSupreme Court of the United States · 1929
- Leeds & Catlin Co. v. Victor Talking MacHine Co.Supreme Court of the United States · 1909
- Butterworth v. United States Ex Rel. HoeSupreme Court of the United States · 1884
- Agawam Co. v. JordanSupreme Court of the United States · 1869
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3Cited by2 opinions
- American Lecithin Co. v. J. C. Ferguson Mfg. Works, Inc.District Court, D. Rhode Island · 1937
- National Pigments & Chemical Co. v. Mid-Continent Mud Co.District Court, S.D. Texas · 1934