United Chromium, Inc. v. International Silver Co.

53 F.2d 390, 11 U.S.P.Q. (BNA) 108, 1931 U.S. Dist. LEXIS 1777
CourtDistrict Court, D. Connecticut
DecidedOctober 20, 1931
Docket1994
StatusPublished
Cited by9 cases

This text of 53 F.2d 390 (United Chromium, Inc. v. International Silver Co.) is published on Counsel Stack Legal Research, covering District Court, D. Connecticut primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
United Chromium, Inc. v. International Silver Co., 53 F.2d 390, 11 U.S.P.Q. (BNA) 108, 1931 U.S. Dist. LEXIS 1777 (D. Conn. 1931).

Opinion

THOMAS, District Judge.

This is a bill in equity which charges the defendant with infringement of letters patent No. 1,581,188, issued to Colin G. Pink on April 20, 1926, on an application filed December 19,1925. By various mesne assignments title to the patent in suit now rests in the plaintiff corporation.

The defense in this case has been conducted by Weisberg and Greenwald, chemists of Now York City, who designed and installed the plating plant for the International Silver Company in Meriden, in this district. So far as appears in this record, the International Silver Company never did anything more than employ Weisberg and Greenwald to equip its plant with a chromium plating outfit and start the operation of it. The jurisdiction of this court is therefore invoked because of the facts just set forth which show that Weisberg and Greenwald of Now York City are the real defendants and the International Silver Company is the nominal defendant using the product of the New York chemists.

Oh June 20,1928, and before this suit was brought, Fink filed a disclaimer limiting claims 1, 2, 4, 5, 6, 10, 11, 12, 13, and 15, as will hereinafter appear when the disclaimer is under discussion.

The claims in suit, in addition to those limited by the disclaimer, are 3, 16, and 18. Claims 7, 8, 9, 14, and 17 are not in issue.

The invention described and claimed in the patent in suit relates to electroplating, and more particularly to a process of electrodepositing chromium from solutions of chromic acid.

The invention claimed by the patentee is, as admitted in the patent, only an improvement in the art of chromium plating, as the literature on the subject dates back many years. Professor Fink bad made a deep study of the subject-matter over a period of years, and was familiar with the history of the art, and in the specification said: “For merely a century there has appeared in the literature considerable matter in respect to chromium plating, and in that literature the use of chromic acid as an electrolyte, as well as the use of various so-called addition agents has been proposed. Notwithstanding these disclosures, a practical and commercially available process of electroplating chromium has not heretofore been known, nor have any of the attempts to establish the commercial art of electro-depositing chromium ever satisfied the test of actual commercial requirements. What attempts have been made have always given uncertain and unreliable results and have -resulted in ultimate failure as a reliable or satisfactory commercial process.”

Professor Fink then continues to describe the invention, and it can be no better stated than in the specification where he says:

“I pass an electric current (from an anode to a cathode, the latter serving as the object on which the metal is to bo deposited) through a suitable chromium-carrying electrolyte solution, in the presence of a catalyst. The catalyst is, as usual, a bystander which does not enter into the electro-chemical decomposition. The chromium-carrying electrolyte which I have found suitable for my process, is a solution of chromic acid, its degree of concentration as regards baths of commercial interest ranging from about 150 grams per litre to saturation.

“Tho catalytic agent which I use is one having an acid radical which is stable in the bath and which remains stable under the actions which occur in the process when the current is passed through the bath. This catalytic agent is one which performs its action at the cathode.”

Among the acid radicals proposed by the patentee is an acid having a kulphate radical which is represented by the chemical sym~ bol SO4. The S stands for sulphur, the O for oxygen, and so the SO4 is the sulphaLe radical which is the catalyst of the patent.

The inventor discloses and emphasizes five rules essential to a continuous and commercial operation, and asserts that these rules transformed the art of small and impractical laboratory experiments to what he had been for-some years seeking, viz., a continuous, practical, and commercially successful chromium plating process. These rules are carefully set forth in the specification, and are as follows;

*392 (1) In preparing the electrolyte all of the stable radicals (e. g. SOi) must be computed whether originally in the chromic acid, in the catalytic agent, or otherwise entering the bath..

(2) The amount of stable radicals (catalytic agent) in the bath should approximate 2.5 grams- — be 5 grams of sulphate radical per liter of a solution containing 250 grams per liter of chromic acid.

(3) The quantity of the catalytic agent should be regulated within said limits for continuous operation.

(4) By adding to or subtracting from the quantity of catalytic agent (stable radicals) already present in the chromic acid solution the necessary amount to bring the total amount up to or down to the given limits.

(5) For temperatures of 15°C to 40°C the proper film is obtained with current densities from *4 to 1 ampere per square inch. The specification then concludes, and asserts, in effect, that, if these rules are observed, there will result a practical, reliable, and commercially available and successful process for eleetrodepositing chromium from chromic acid solutions and a reliable and commercially adaptable method of preparing the chromic acid electrolyte. The evidence shows that these rules were original with Professor Fink, and were only discovered by him after years of research and laboratory experiment in the laboratory at Columbia University, where he was and is professor in chemical engineering and head of the Department of Electro-Chemistry. He asserts, and I find from the evidence, that, when these rules are followed, commercial success — as distinguished from mere laboratory experiments whieh at times.are successful as well as unsuccessful — a practical and continuous electrolyte is assured. Without an adherence to these rules, no process can be commercially successful. But the importance of the correct solution dominates the whole theory of successful chromium plating for commercial purposes.

It is alleged by the plaintiff that, prior to the invention described and claimed in the patent in suit (whieh consists in the simultaneous application of the five rules above set forth, some of which are not new per se), chromium plating was limited to a practice in laboratories, and was a failure when carried beyond the laboratory limits. All througlrthe specification the patentee -emphasizes the importance of commercial success, and the evidence shows that the commercial success was the result accomplished by simultaneous application of the rules mentioned, supra. The evidence adduced clearly establishes the fact that, notwithstanding all the experiments which had been made by many highly trained scientists through a period of nearly a century, no satisfactory commercial- process of chromium plating was found prior to the discovery by the patentee of the five rules enumerated. Today chromium plating seems common-place, as we find it on all automobile hardware, whether on the cheapest or highest priced ears. It is generally applied to-day on all bath room and plumbing fixtures, on so-called silver sets and silverware, on many articles of cheap jewelry, as well as on many other articles of manufacture and which are in general use.

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Bluebook (online)
53 F.2d 390, 11 U.S.P.Q. (BNA) 108, 1931 U.S. Dist. LEXIS 1777, Counsel Stack Legal Research, https://law.counselstack.com/opinion/united-chromium-inc-v-international-silver-co-ctd-1931.