Indiana General Corp. v. Krystinel Corp.

297 F. Supp. 427, 161 U.S.P.Q. (BNA) 82, 1969 U.S. Dist. LEXIS 13254
CourtDistrict Court, S.D. New York
DecidedFebruary 17, 1969
Docket63 Civ. 479
StatusPublished
Cited by20 cases

This text of 297 F. Supp. 427 (Indiana General Corp. v. Krystinel Corp.) is published on Counsel Stack Legal Research, covering District Court, S.D. New York primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Indiana General Corp. v. Krystinel Corp., 297 F. Supp. 427, 161 U.S.P.Q. (BNA) 82, 1969 U.S. Dist. LEXIS 13254 (S.D.N.Y. 1969).

Opinion

OPINION

TENNEY, District Judge.

This is an action arising under the Patent Laws of the United States, 35 U.S.C. §§ 283, 284, for infringement of United States Letters Patent No. 3,036,-009, issued on May 22, 1962, naming Georg Zerbes as inventor and entitled “Ferro-magnetic, Ceramic Body with High Quality at High Frequency”. Plaintiff seeks an injunction and damages.

After hearing the testimony of witnesses, examining the exhibits, the pleadings, the briefs and the proposed findings of fact and conclusions of law submitted by counsel, this Court makes the following findings of fact and conclusions of law.

Findings of Fact

1. Plaintiff, Indiana General Corporation (hereinafter referred to as “Indiana General”), is a corporation organized and existing under the laws of the State of Indiana and has its principal place of business in the City of Valparaiso, Porter County, Indiana. Prior to a merger with the Indiana Corporation in 1959, plaintiff was known as “General Ceramics”.

2. Steatit - Magnesia Aktiengesellschaft (hereinafter referred to as “Stemag”), a corporation which, pursuant to an agreement, exchanged scientific information with plaintiff, was organized and exists under the laws of the Federal Republic of Germany and has its principal place of business in Lauf (Pegnitz), Germany.

3. Defendant, Krystinel Corporation (hereinafter referred to as “Krystinel”), is a corporation organized and existing under the laws of the State of New York and has its principal place of business in Portchester, Westchester County, New York.

4. The patent in suit, United States Letters Patent No. 3,036,009, issued May 22, 1962, has one claim which reads as follows:

“I claim:
A magnetic core body having a high Q-factor in the high frequency range of up to 300 mcs. Comprising a sintered nickel-zinc ferrite prepared by firing at about 1100° C. to about 1350° C. a composition consisting essentially of the NiO, ZnO, and the ferric oxide components set forth in weight percent within the area A-B-CD of the drawing, said composition comprising in addition 1 to 5 weight percent of manganese oxide based on the total weight percent, and 1-601% by weight of cobalt oxide based on the proportion of nickel oxide in the said composition, the amount of cobalt oxide being within 0.1 to 3.0¡% by weight of the total composition, the proportion of iron, oxide in said batch being at *430 least 50 mol percent of the entire composition.” 1

5. Although the patent in suit claims ranges of percentages for each of its 5 components rather than describing the specific formula which plaintiff asserts produces a Q-factor of 470 at 1 me., 2 Table 1 of the patent in suit sets forth three examples of variations on the 5-component combination, each of which is shown to effect an improvement in the Q-factor of the nickel-zinc-ferrite system in the frequency range of 1 me. 3

6. More simply, the claimed invention of the patent in suit is the discovery that small additions of both cobalt and *431 manganese to a niekel-zine-ferrite, having an excess of 50 mol percent 4 of the iron component, enhances the Q-factor of the ferrite far more than that which is produced by adding either cobalt or manganese alone.

7. The ferromagnetic ceramic body of the patent in suit is a composition of matter generally referred to as a “ferrite”. This composition results from mixing the described oxides.in specified proportions, after which the mixture is pressed into a desired shape followed by firing or sintering at a temperature between 1100° C. and 1350° C. During the sintering process, a chemical reaction occurs to produce the ferrite. The oxides included within the claim of the patent are specified in weight percentages of the whole composition as:

Ferric oxide (Fe2Os) 66.5%-80.0%

Nickel oxide (NiO) 2.0%-29.5l%

Zinc oxide (ZnO) 2.0'%-31.5%

Cobalt oxide (CoO) .1%- 3.01%

Manganese oxide (MnO) 1.0%- 5.0%

with the further requirement that the cobalt oxide be within the range of 1 to 60 percent by weight of the nickel oxide addition and that the ferric oxide be at least 50 mol percent of the entire composition. 5

8. The ferrite composition of the patent in suit found particular use as an antenna rod in home radio receiving sets. An antenna is a pencil-like rod or rectangular strip made of the ferrite composition around which turns of wire are wound. The ferrite core rod presents less resistance to the passage of radio waves than does the surrounding air (spoken of as “permeability”) so that broadcast radio waves pass through or near the ferrite rod. The radio waves, by cutting across the turns of wire, induce a current therein, which when conducted to other circuits in the radio, is amplified to audible sound. Suffice it to say that, generally, the higher the Q-factor of the ferrite material, the more efficient the antenna. As mentioned above, the Q-factor is also the reciprocal function of “loss”. Therefore, since the radio broadcast signals are relatively weak and do not have much contained energy, the antenna rod material must have a low loss factor so that most of the energy which is received from the radio waves is conducted to the radio circuits.

9. During 1951 and thereafter, General Ceramics was manufacturing antenna rods for the radio industry with less than satisfactory results. Under the trademark “FERRAMIC”, General Ceramics made and sold a material labeled "Ferramic J” which consisted of a nickel-zinc ferrite containing small additions of magnesium and manganese. Its Q-faetor was relatively low and the impedance of the antenna circuit was negatively af *432 f ected by the passage of time, the ambient temperature variations and the shocks normally resulting during the process of shipping the radios to market, all of which produced customer dissatisfaction.

10. During the latter part of 1952 and throughout 1953, General Ceramics was making and selling a “Ferramic N” antenna rod material which consisted of a nickel-zinc ferrite with the addition of a small amount of manganese. The chemical formula of the 4-component “N-body” by percentage weight of the total composition was as follows:

Ferric oxide (Fe203) 75.51%

Nickel oxide (NiO) 9.2%

Zinc oxide (ZnO) 13.5%

Manganese oxide (MnO) 1.8%

Although the N-ferrite possessed a higher Q-factor than did the “J” material, the same difficulties were experienced by the radio manufacturers with regard to the impedance of the antenna circuit.

11. Georg Zerbes, the named inventor of the patent in suit, is a resident of Germany and an employee of Stemag.

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Bluebook (online)
297 F. Supp. 427, 161 U.S.P.Q. (BNA) 82, 1969 U.S. Dist. LEXIS 13254, Counsel Stack Legal Research, https://law.counselstack.com/opinion/indiana-general-corp-v-krystinel-corp-nysd-1969.