New York Filter Manuf'g Co. v. Elmira Waterworks Co.
U.S. Circuit Court for the District of Northern New York
This was a suit in equity by the New York Filter Manufacturing Company against the Elmira Waterworks Company and others for alleged infringement of letters patent No. 293,740, issued February 19, 1884, to Isaiah S. Hyatt, for an improved method 'of clarifying water.
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This was a suit in equity by the New York Filter Manufacturing Company against the Elmira Waterworks Company and others for alleged infringement of letters patent No. 293,740, issued February 19, 1884, to Isaiah S. Hyatt, for an improved method 'of clarifying water. In a suit heretofore brought by the complainant against Schwarzwalder and Fink in the circuit court for the Southern district of New York, this patent was sustained on final hearing, and a decree entered for an injunction and an account (Cl Fed. 840), which decree was affirmed by the circuit court of appeals for the Second circuit…
1Opinion of the Court
COXE, District Judge.
I have examined with care all of the testimony relating to the only question now open — the question of infringement. In view of what has been said heretofore by this court and the circuit court of appeals it will serve no useful purpose to discuss this question at length. Suffice it to say that, in my judgment, the Elmira plant infringes the Hyatt patent. The defendants seem to entertain the opinion that they may use the Hyatt process if they use something else in connection with it. I do not think so. The real work of purification at Elmira is done by the Hyatt process.…
2Cited by2 opinions
- New York Filter Mfg. Co. v. JacksonU.S. Circuit Court for the District of Eastern Missouri · 1898
- Heap v. GreeneCourt of Appeals for the First Circuit · 1899