Indiana General Corporation, a Corporation v. Krystinel Corporation, a Corporation

421 F.2d 1023, 164 U.S.P.Q. (BNA) 321, 1970 U.S. App. LEXIS 11205
CourtCourt of Appeals for the Second Circuit
DecidedJanuary 14, 1970
Docket33535
StatusPublished
Cited by1 cases

This text of 421 F.2d 1023 (Indiana General Corporation, a Corporation v. Krystinel Corporation, a Corporation) is published on Counsel Stack Legal Research, covering Court of Appeals for the Second Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Indiana General Corporation, a Corporation v. Krystinel Corporation, a Corporation, 421 F.2d 1023, 164 U.S.P.Q. (BNA) 321, 1970 U.S. App. LEXIS 11205 (2d Cir. 1970).

Opinion

421 F.2d 1023

164 U.S.P.Q. 321

INDIANA GENERAL CORPORATION, a corporation, Plaintiff-Appellant,
v.
KRYSTINEL CORPORATION, a corporation, Defendant-Appellee.

Nos. 116, 117, Dockets 33486, 33535.

United States Court of Appeals Second Circuit.

Argued Oct. 30, 1969.
Decided Jan. 14, 1970.

James C. Wood, Chicago, Ill. (Richard Whiting, New York City, and William E. Recktenwald and Hofgren, Wegner, Allen, Stellman & McCord, Chicago, Ill., on the beief), for plaintiff-appellant.

Harvey E. Bumgardner, Jr., New York City (Ira J. Krakower, Martin J. Cohen, and Arthur, Dry, Kalish, Taylor & Wood, New York City, on the brief), for defendant-appellee.

Before MEDINA, MOORE and FEINBERG, Circuit Judges.

MEDINA, Circuit Judge:

The issue involved in this case is the validity of United States Patent No. 3,036,009, issued to Georg Zerbes for the invention of a five-oxide component soft ferrite manifesting a high Q-factor at high frequencies and assigned by him to Indiana General Corporation, plaintiff-appellant. The court below, Judge Tenney sitting without a jury, held the patent invalid. Opinion reported at 297 F.Supp. 427 (S.D.N.Y.1969). Judge Tenney concluded that the patent was invalid under 35 U.S.C. Section 112 in that it included overly broad statements and misrepresented the scope of the inventive advance; under 35 U.S.C. Section 102 because of commercial use for more than one year before August 11, 1958, the filing date of the continuation-in-part application which eventually became the patent in suit; under 35 U.S.C. Section 112 for claiming a utility not supported by the specification and known by Zerbes at the time the first application for a patent was filed in the United States on November 9, 1954; and under 35 U.S.C. Section 103 for obviousness in view of the state of the art as it existed prior to November 27, 1953, the date on which the original application for a patent was filed in West Germany. Judge Tenney also held that Krystinel Corporation's accused products K-401-1, K-411, and K-502 were non-infringing. However, he concluded that Krystinel's K-401, discontinued on November 1, 1963, would have infringed the patent if the patent were held to be valid. He also concluded that Indiana General, its corporate predecessor General Ceramics Corporation, and Zerbes did not engage in fraud before the Patent Office although their concealment of certain facts rendered their conduct less than candid, and that the case was not 'exceptional' within the meaning of 35 U.S.C. Section 285 to warrant the awarding of attorneys' fees to Krystinel. Although, in affirming the judgment below we conclude that Judge Tenney's findings of fact are not 'clearly erroneous' and that his conclusions of law are correct, we find it necessary to discuss only the issue of obviousness.

I.

Discussion of Relevant Technical Terms

The invention to which the patent in suit relates is a soft ferrite which allegedly has a high Q-factor in high frequency communication applications.1 In order to understand the interaction of the patent in suit with the prior art, it is essential that the characteristics of soft ferrites and their relevant magnetic properties be explained.

A ferrite is a chemical composition containing iron (ferric) oxide and other metallic oxides which is magnetic although not metallic. 'Soft' ferrites are temporary magnets; they become magnetized when an electric current or radio waves pass through them and lose most of their magnetism when such passage ceases. 'Hard' ferrites are permanent magnets.

The ferrites here involved have an 'inverse spinel' structure. Their formula is MO . Fe(2)O(3), where M represents any divalent metallic ion. A divalent metallic ion is one in which two electrons have been given up to form a neutral compound. Examples of such ions are cobalt (Co(2)(k)), manganese (Mn(2) (k)), zinc (Zn(2)k), and nickel (Ni(2)k). Each of these ions displays different magnetic properties.

The inverse spinel structure is cubic and crystalline, and the geometrical arrangement of the iron and divalent metallic ions and the oxygen ions within the crystal is responsible for the various magnetic properties of the substance. Generally some of the iron ions form a cube within which other iron ions, the ions of the divalent metals, and oxygen ions are arranged. Within the cubic structure, oxygen ions are closely packed together; and the iron ions, obtained from ferric oxide, and the divalent metallic ions are situated at interstices of lattices formed by the oxygen ions. There are two types of interstices, called A sites and B sites. An inverse spinel ferrite contains twice the number of B sites as A sites. In such a ferrite the iron ions occupy all the A sites and one-half the B sites. Consequently, the number of iron ions occupying the A sites is equal to the number occupying the B sites.

The interactions between the metallic ions of the A and B sites are very numerous, so much so that all other ionic interactions are relatively unimportant. Because the iron ions are arranged in opposite alignments on the A sites and the B sites, they cancel each other out. As a result, the magnetic properties of an inverse spinel ferrite are largely determined by the magnetic properties of the divalent metallic ions-- i.e., cobalt, manganese, zinc, nickel, magnesium, vanadium, and copper ions-- occupying the remainder of the B sites.

These data are the A B Cs of the art. Those skilled in the art are physicists, chemists and chemical engineers such as most of those who testified at the trial. In due course we shall discuss the investigations of the practitioners of this art and the nature of the progress made in the development of the art that constitute the background against which the issue of obviousness must be adjudicated.

The importance of soft ferrites in high frequency communication applications is derived from their high resistivity.2 The reason is that this property causes the material to be more efficient by having low eddy-current losses. The result is that less power is wasted, and the time lag in the operation of a given electrical device is decreased. Also important is the existence of high permeability and high quality factor. Permeability, symbolized by the Greek letter Mu is a measure of the ability of a given material to concentrate magnetic lines of force. It is the ratio of the flux (lines-of-force) density of the material in a given magnetic field compared with the flux density of air in the same field.

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421 F.2d 1023, 164 U.S.P.Q. (BNA) 321, 1970 U.S. App. LEXIS 11205, Counsel Stack Legal Research, https://law.counselstack.com/opinion/indiana-general-corporation-a-corporation-v-krystinel-corporation-a-ca2-1970.