US2793507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of krypton and xenon
Assignee: Ineos US Chemicals Co Inc
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Filing: 1954-12-17
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Granted: 1957-05-28
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Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Miloslav P Hnilicka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:35
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04642; F25J3/04745; F25J3/04151; F25J3/04242; F25J3/04248; F25J3/04278; F25J3/04284; F25J3/0429; F25J3/04303; F25J3/04406; F25J3/04412; F25J3/04751; F25J3/04757; F25J3/04763; F25J3/04769; F25J3/04854; F25J3/0486; F25J2205/00; F25J2205/20; F25J2205/60; F25J2250/00; F25J2250/20; F25J2270/00; F25J2270/02; F25J2270/12; F25J2270/60; Y; Y10; Y10S; Y10S62/00; Y10S62/923; Y10S62/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PPARATUS FOR PRODUCING KRYPTON AND XENON FROM THE COLD, COMPRESSED AIR STREAM OFF AN OXYGEN PROCESS COMPRISING IN COMBINATION A PAIR OF SELECTIVE ADSORBERS AND SWITCH VALVES FOR ALTERNATELY INTRODUCING SAID AIR STREAM INTO THE ADSORBERS WHEREBY KRYPTON, XENON AND HYDROCARBON IMPURITIES ARE CONTINUOUSLY BEING ADSROBED FROM SAID STREAM, AND MEANS FOR HEATING THE INACTIVE ADSORBENT UNDER REDUCED PRESSURE WHEREBY THE HYDROCARBON IMPURITIES, XENON AND KRYPTON ARE SELECTIVELY DESORBED FROM SAID ADSORBENT WHILE THE LATTER IS OUT OF CONTACT WITH THE COLD AIR STREAM.
Claim 2
Dependent Claim
85 words
A PPARATUS FOR PRODUCING KRYPTON AND XENON FROM THE COLD, COMPRESSED AIR STREAM OFF AN OXYGEN PROCESS COMPRISING IN COMBINATION A PAIR OF SELECTIVE ADSORBERS AND SWITCH VALVES FOR ALTERNATELY INTRODUCING SAID AIR STREAM INTO THE ADSORBERS WHEREBY KRYPTON, XENON AND HYDROCARBON IMPURITIES ARE CONTINUOUSLY BEING ADSROBED FROM SAID STREAM, AND MEANS FOR HEATING THE INACTIVE ADSORBENT UNDER REDUCED PRESSURE WHEREBY THE HYDROCARBON IMPURITIES, XENON AND KRYPTON ARE SELECTIVELY DESORBED FROM SAID ADSORBENT WHILE THE LATTER IS OUT OF CONTACT WITH THE COLD AIR STREAM.
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) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |