Electrons, Inc. v. Coe’s Empirical Analysis

Citation profile

8 federal appellate · 3 district ·

Most-quoted passages

The sentences later courts lift from this opinion, ranked by how many decisions quote each — the parts of the opinion doing the work. These counts are smaller than the citation total above because most of the 20 citing decisions cite the case generally; a passage count includes only decisions quoting that exact language verbatim.

1. ““* * * that a source of chemically active rays is presented in the combination of a gas-filled tube, for instance an argon or neon filled tube, such as is in general use for the purposes of advertising, with an admixture of metal vapor, for instance mercury vapor, to the gas in the tube, the tube itself being preferably made of a material highly pervious to ultra-violet rays, such as quartz, or uviol glass, or being provided with an opening closed by such material.” “If a voltage is connected with the electrodes forming part of such a tube, a glow current will pass between the electrodes which will also ionize the mercury molecules which will now emit great quantities of ultraviolet rays. Owing to the presence, in the tube, of a gas, for instance a rare gas, besides the metal vapor, such lamp can be operated with alternating current and can therefore be connected directly with any house lighting system. “We have further found that combined gas and metal vapor lamps for high capacity can be ignited easily without requiring a high voltage, if the ordinary (cold) electrodes are replaced by or combined with hot (incandescent or glow) cathodes. We may for instance use tungsten cathodes, but we have found it particularly convenient to use the kind of glow cathodes known under the name of Wehnelt-cathodes, which do not require any heating current, it being possible to cause the cathodes to be heated by the ion current itself upon the glow discharge having been started by means of on”

   1 later decision quote this exact passage
   e.g. General Electric Co. v. Hygrade Sylvania Corporation

2. ““6. A metal-vapor lamp comprising a vessel adapted to provide a discharge path defined by the walls of said vessel, a Weh-nelt type cathode and a cooperating electrode disposed at opposite ends of said path, and a filling of inert gas and metal vapor; the normal electron emission of said cathode and the pressure of inert gas being adapted to start and support a low voltage gaseous discharge in said path, the said gaseous discharge being adapted to raise the metal-vapor density throughout the path sufficiently to make the metal vapor the main source of emitted rays.” “13. A mercury vapor lamp comprising a vessel adapted to provide a discharge path defined by the walls of said vessel, a Weh-nelt type cathode and a co-operating electrode disposed at opposite ends of said path, a filling of inert gas and mercury vapor, the normal electron emission of said cathode and the pressure of inert gas being adapted to start and support a low voltage gaseous discharge in said path, the said gaseous discharge being adapted to raise the mercury vapor density through-out the path sufficiently to make the mercury vapor the main soruce of emitted rays and luminescent material enclosed in said vessel.” “25. A mercury vapor lamp comprising an elongated vessel, a filling of rare gas and mercury vapor, the latter constituting, in operation, the main source of spectral ray emission, and two fixed main discharge electrodes, at least one of which is a Weh-nelt type cathode, spaced apart in said vessel”

   1 later decision quote this exact passage
   e.g. General Electric Co. v. Hygrade Sylvania Corporation

3. ““And the issue principally discussed in the briefs, both of Zecher and of the Commissioner of Patents, was whether or not an ultra violet ray discharge tube shaped and fabricated as above described [like a wide U], with the principal object of safety for the operator, was invention. No such question is presented in the instant case. Moreover the record in Re Zecher, supra, shows that neither the Court of Customs and Patent Appeals nor the tribunals of the Patent Office had the advantage of testimony like that in the instant case, and it was therefore not made apparent either in the court or in the Patent Office in Re Zecher, supra, that the combination of elements and principles involved in the Meyer application — and possibly under the Zecher claims — would result in elimination of the disadvantages of the early art and the accomplishment of production of ultra violet rays in a much more efficient way.””

   1 later decision quote this exact passage
   e.g. General Electric Co. v. Hygrade Sylvania Corporation