Rem-Cru Titanium, Inc. v. Watson

152 F. Supp. 282, 114 U.S.P.Q. (BNA) 529, 1957 U.S. Dist. LEXIS 3384
CourtDistrict Court, District of Columbia
DecidedJune 17, 1957
DocketCiv. A. 2520-54
StatusPublished
Cited by7 cases

This text of 152 F. Supp. 282 (Rem-Cru Titanium, Inc. v. Watson) is published on Counsel Stack Legal Research, covering District Court, District of Columbia primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Rem-Cru Titanium, Inc. v. Watson, 152 F. Supp. 282, 114 U.S.P.Q. (BNA) 529, 1957 U.S. Dist. LEXIS 3384 (D.D.C. 1957).

Opinion

CURRAN, District Judge.

This is a civil action brought by the plaintiff, Rem-Cru Titanium, Inc., under Title 35, Section 145 of the United States Code, to authorize the defendant, Commissioner of Patents, to issue to the plaintiff Letters Patent containing Claims 16 to 33, inclusive, of application Serial No. 229,143, entitled “Processing of Alloys”, filed by Milton B. Vordahl on May 31, 1951. Claims 32 and 33 of the application were cancelled and removed from the case before trial, leaving Claims 16 to 31, inclusive, for consideration by the Court. The aforementioned application is a division of a parent application, Serial No. 132,327, filed December 10, 1949, both applications being assigned to the plaintiff.

Of the Claims in issue Claims 28 to 31, inclusive, originated in the Vordahl application, while Claims 16 to 27, inclusive, were copied, for the purpose of interference, from patent 2,640,773, granted June 2, 1953, to Allegheny Ludlum Steel Corporation, as assignee of R. K. Pitler, on an application filed January 25, 1952. This latter date is two years subsequent to Vordahl’s effective filing date of December 10, 1949.

The Claims in the Vordahl application relate to alloys of titanium with two or more of the elements iron, chromium, manganese or molybdenum. The starting point, therefore, in Vordahl’s invention is metal titanium. Pure titanium has relatively low strength compared to steel, and therefore it is necessary to alloy it with other elements which would impart increased strength. As the strength is increased by alloying additions, the ductility is correspondingly impaired until it falls below useful values. Thus it could be rendered so brittle that it could not be forged, rolled or otherwise fabricated into the final shape desired, and so the problem confronting the industry was to discover a titanium-bearing material having the optimum over-all combination of strength and ductility.

Vordahl maintains that if certain metals are alloyed in certain proportions with titanium and the resulting alloy is subjected to forging or rolling, within the alpha-beta temperature range, a new type of wrought alloy will be obtained having a unique microstructure consisting of a fine dispersion or coherent admixture of fine particles of alpha titanium and beta titanium, which possess the optimum over-all combination of strength and ductility.

The Vordahl specification indicates that the elements iron, chromium, manganese or molybdenum act as stabilizers of the beta phase of titanium alloy and that, by using a sufficient amount of these elements, a mixed alpha-beta phase structure may be obtained at normal atmospheric temperatures. The specification also presents data which indicates that the ductility of titanium-manganese alloys, having this mixed phase structure, may be enhanced by plastic deformation while maintaining the alloys at a substantially constant strength level by appropriate stabilization.

The Claims of the Vordahl application fall into two classes: (a) Claims 16 to *284 27, inclusive, in which titanium is alloyed with specific percentages of iron and at least two metals of the group of iron, chromium, manganese and molybdenum; and (b) Claims 28 to 31 which are directed at a titanium wrought alloy with 2 to 15 atomic percent of at least two elements of the group iron, chromium, manganese and molybdenum. Claim 16 is representative of group (a) and Claim 28 is representative of group (b).

Claim 16 is as follows:

“An improved titanium base alloy which contains about 1 to 4% iron, up to about .30% maximum of each of the gases oxygen and nitrogen, and at least two metals within the ranges specified from the group consisting of: chromium about .5 to 6%, manganese about .5 to 6%, and molybdenum about .5 to 5%; the iron-plus-alloying metal content being less than 10% but not less than about 5%; the alloy being characterized by its good ductility and impact strength with relatively high tensile strength.”

Claim 28 is as follows:

“A wrought alloy consisting essentially of about 2 to 15 atomic percent in aggregate of at least two elements selected from the group consisting of manganese, chromium, molybdenum and iron, balance titanium, characterized by a mierostructure comprising a coherent admixture of small bodies of alpha titanium and beta titanium, and in having an ultimate strength as hot rolled, of at least 130,000 psi and a tensile elongation of at least 2%.”

Claim 30 includes an additional limitation not found in Claim 28, which requires that the minimum aggregate manganese and iron content be at least 2 atomic percent. Claim 29, in addition, requires three alloying elements with titanium, while Claims 28, 30 and 31 read on the use of three such alloying elements but require only two. Claims 28 and 31 require a numerical minimum tensile strength of 130,000 psi (pounds per square inch), while Claims 29 and 30 refer to a “high tensile strength.”

The defendant denied a patent to the plaintiff because defendant’s position is that (1) Claims 16 to 27, inclusive, are unpatentable because they are directed to subject matter not sufficiently supported in the application; (2) Claims 28 to 31, inclusive, are unpatentable because they are unduly broad in relation to Vordahl’s actual disclosure and are based upon insufficient disclosure; (3) Claims 28, 30 and 31 are unpatentable over the United States patent to Jaffee 2,588,007; and (4) Claims. 28, 29, 30 and 31 are unpatentable over the disclosure in an article by Kroll Zeitschrift fur Metallkunde, Vol. 29 (1937) p. 190 and 191.

Defendant has raised a further issue-in this case by citing an additional reference, namely, the Battelle Summary-Report, Part III, to the Wright Patterson Air Force Base. This reference was not cited or considered by the Patent Office during the prosecution of the Vordahl application. The transmittal letter is dated September 23, 1949. The defendant does not challenge plaintiff’s-statement that it has shown that Vordahl is entitled to an effective date because of prior conception, coupled with, the exercise of reasonable diligence to a constructive reduction to practice prior to the Battelle Report date. The defendant concedes that this Report was not made public until several years after the-filing date of the Vordahl application, but nevertheless relies upon it as showing prior knowledge by others, under 35 United States Code, § 102, as of the date, September 23, 1949, of the transmittal-letter of the subject matter of Claims-28, 30 and 31 here in issue.

The issues to be decided in this case-are as follows:

I. Are Claims 28, 30 and 31 patentable over Jaffee patent 2,588,007?

II. Are Claims 28 to 31, inclusive, patentable over the German publication “Metallkunde?”

III. Does the Vordahl application-comply with the statutory requirements. *285 of 35 United States Code, § 112, as to sufficiency of disclosure to: (a) support Claims 28-31 covering Vordahl’s invention; (b) support Claims 16-27 copied from the Pitler patent 2,640,773 ?

IV. Is the Battelle Summary Report, Part III, (a) antedated by Vordahl as to the invention of the Claims in issue; and (b) legally effective to establish prior knowledge of the alleged invention ?

The Battelle Summary Report

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152 F. Supp. 282, 114 U.S.P.Q. (BNA) 529, 1957 U.S. Dist. LEXIS 3384, Counsel Stack Legal Research, https://law.counselstack.com/opinion/rem-cru-titanium-inc-v-watson-dcd-1957.