Application of Jean Frederic Joliot

270 F.2d 954
CourtCourt of Customs and Patent Appeals
DecidedOctober 30, 1959
DocketPatent Appeal 6514
StatusPublished

This text of 270 F.2d 954 (Application of Jean Frederic Joliot) is published on Counsel Stack Legal Research, covering Court of Customs and Patent Appeals primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Application of Jean Frederic Joliot, 270 F.2d 954 (ccpa 1959).

Opinions

MARTIN, Judge.

This is an appeal from the decision of the Board of Appeals of the United States Patent Office, dated July 31, 1958, affirming the rejection of claims 5, 6 and 8, all the claims remaining in appellant’s application for a patent, Serial No. 666,-183, filed April 30, 1946, relating to “Improvements in and Relating to the Production of Energy through Nuclear Fission.” Priority, based on an application filed in France on April 30, 1940, is claimed under the Boykin Act (Public Law 690, 79th Congress, 60 Stat. 940).

Claims 6 and 8, illustrative of the appealed claims, appear as follows:

“6. A method for the improvement of the efficiency of methods and devices for the production of energy through nuclear fission of uranium, by means of a divergent chain reaction of neutrons, said method consisting in making use, for the reaction, of the uranium element in a form in which the proportion of isotope 235 is about five times that of the said isotope in normally obtained uranium and the slowing down element is heavy water.
“8. In a device for the production of energy through nuclear fission of uranium essentially formed of a mass of uranium susceptible to give rise under the action of neutrons to an emission of neutrons in a chain, the said mass being enclosed in a neutron reflecting envelope and comprising in its midst, an element for slowing down the neutrons and part at least of said neutrons to approximate thermal equilibrium with the mass, said element being in an amount less than that which hinders unlimited development of chain in a divergent geometric progression, and a further element absorbing the slowed down neutrons in a proportion which becomes higher with respect to the absorption by the uranium when the temperature rises, wherein the uranium used contains a proportion of isotope 235 of uranium higher than that existing in uranium as found in nature.”

The invention allegedly disclosed in this application pertains to means for increasing the efficiency of nuclear reactors and chain reaction processes producing energy by the fission of uranium nuclei, the means consisting in the provision of a uranium fuel which has been enriched in the proportion of uranium isotope 235, as compared with that ordinarily obtained. Such enrichment is said to create conditions favorable to the propagation of a diverging or self-sustaining chain reaction, which facilitates the continuous production of energy for industrial or military purposes.

The materials disclosed in the application here on appeal are said to be useful in combination with the “dispositions” shown in certain other of appellants’ applications, referred to in blank in the specification here in issue. Appellants assert that the disclosures of prior copending United States applications Serial No. 328,160 and Serial No. 328,373, hereinafter referred to as U.S. I and U.S. II, respectively, were intended by such blank reference and should be incorporated with the disclosure of the application on appeal in assaying its sufficiency.

The U.S. I application provides for a device for the production of energy (a nuclear reactor) including a mass of uranium fuel and certain elements intended to control the rate of energy liberation to avoid the possibility of explosion. Such latter elements comprise absorber and moderator materials, designed, respectively, to absorb and slow down the neutrons which propagate the chain reaction. The complete system [956]*956referred to above is enclosed in a “diffusing” or reflecting “envelope” in order to prevent the escape of the neutrons emitted by nuclear fission. The diverging chain reaction is said to occur only when the reacting mass exceeds a certain threshold quantity, termed the critical mass. This mass is dependent upon the relative amounts of the components of the reacting system and the relative probabilities of neutron release from a fissionable nucleus. While no quantities of fuel, absorber or moderator materials are disclosed in this application, the specification avers that “since science presently has at its disposal means for measuring the multiplication of neutrons, it will be easy to estimate the value of the critical mass by progressive experiments.”

The U.S. II application discloses several alternative means for controlling the chain reaction by interruptions thereof comprising periodic introduction or removal from the device of fissionable material or absorber material or periodic approach and separation of parts of the uranium mass. Additionally, this application suggests periodic disengagement of the external reflecting envelope as a reaction control mechanism.

These prior filed applications, while vested in, and hence under the control of, the Alien Property Custodian, were rejected on the ground that they did not contain disclosures sufficient to satisfy the requirements of R.S. 4888.1 Those rejections were affirmed by the Board of Appeals and no appeals were taken therefrom nor appropriate action had before the District Court for the District of Columbia.

All the claims here on appeal have been rejected on the ground that the specification of the present application, together with the disclosures of U.S. I and II, is insufficient to teach those skilled in the art how to make and use the invention, as required by 35 U.S.C. § 112, which, in 1953, replaced R.S. 4888. Other grounds of rejection have been made, but in the view we take of the case, it is unnecessary to consider more than the one above mentioned.

Appellants have here predicated their contention of patentability of claims 5 and 8 entirely, and claim 6 alternatively, upon the incorporation of the disclosures of U.S. I and II into the application on appeal. They rely on the disclosures of the previous applications as the means of showing the operability of the invention described and claimed in the present application. The instant application discloses only the use of an enriched fuel source and refers to the prior filed applications for disclosure of the devices and methods in which such fuel shall be utilized.

Assuming, arguendo, that the disclosures of U.S. I and U.S. II may be properly incorporated in the disclosure of the application on appeal by the reference in blank therein, the two prior disclosures here involved cannot be used to introduce an operative disclosure because of the previous final adjudications as to their insufficiency. While in certain situations a plurality of disclosures may,, [957]*957like pieces of a jigsaw puzzle fitted together, create a new composite disclosure raising a distinctly different issue of sufficiency, wherein the prior applications, although adjudicated, might be considered on their merits, such is not the present case. The disclosures of U.S. I and II in no sense create a new combination with each other or with the disclosure of the instant application, but in reality, if they could do anything, they alone could provide the only possible disclosure to support the contention that an operable invention has been disclosed.

While the wording of the section of the Patent Act of 1952 corresponding to R.S. 4888, viz. 35 U.S.C. § 112,2

Free access — add to your briefcase to read the full text and ask questions with AI

Related

Whittier v. Borchardt
154 F.2d 522 (Customs and Patent Appeals, 1946)
Lavin v. Pierotti
129 F.2d 883 (Customs and Patent Appeals, 1942)
Hemphill Co. v. Coe
121 F.2d 897 (D.C. Circuit, 1941)

Cite This Page — Counsel Stack

Bluebook (online)
270 F.2d 954, Counsel Stack Legal Research, https://law.counselstack.com/opinion/application-of-jean-frederic-joliot-ccpa-1959.