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US3616382A Expired / Lapsed US ⏱️ 0.0 years remaining

Process for making ozone

Assignee: United States Department of the Army
•
Filing: 1969-11-04
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Granted: 1971-10-26
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Expires: 1989-11-04
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Abstract

Abstract A novel process and apparatus for synthesizing high-purity ozone (or for preparing test gas mixtures containing ozone). The process involves containing liquid nitrogen inside a vacuum dewar, supporting a dielectric ozonizer in the liquid nitrogen, evacuating the ozonizer to a low vacuum through a vacuum outlet, closing the vacuum outlet of the ozonizer, introducing highpurity oxygen into the ozonizer through an inlet, closing the inlet, applying a source of high-discharge alternating voltage across metal electrodes and oxygen therebetween, and removing the ozone thereby formed. The product is high-purity ozone. The apparatus comprises a two-walled annular ozonizer of Pyrex glass with electrodes secured onto the outer and inner surfaces.

Inventors

  • 👤 Ervin R Bartle Jr
  • 👤 Paul R Erickson
  • 👤 Edgar A Meckstroth
  • 👤 Benjamin F Myers Jr

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 20:52
CPC Classifications
C; C01; C01B; C01B13/00; C01B13/10; C01B13/11; C01B2201/00; C01B2201/10; C01B2201/30; C01B2201/34; C01B2201/60; C01B2201/64; C01B2201/70; C01B2201/74

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 25 words
The process of claim 1 wherein liquid nitrogen is used to reduce said oxygen to a temperature somewhat below the liquefaction point of said ozone.
Claim 2
Dependent Claim 18 words
The process of claim 2 wherein any residuum of said oxygen is removed before said ozone is removed.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-10-25 1975-04-26 1975-10-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-25 1979-04-26 1979-10-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-25 1983-04-26 1983-10-26 $7700.00 Window Closed / Lapsed

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