Patent US2698523A successfully refreshed from Google Patents.
US2698523A
Expired / Lapsed
US
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Manufacture of krypton and xenon
Assignee: Carthage Hydrocol Inc
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Filing: 1950-04-28
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Granted: 1955-01-04
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Expires: 1970-04-28
Abstract
No abstract record available.
Inventors
- 👤 Miloslav P Hnilicka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:45
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04; F25J3/04406; F25J3/04412; F25J3/04642; F25J3/04745; F25J2205/00; F25J2205/60; F25J2270/00; F25J2270/60; F25J2270/90; Y; Y10; Y10S; Y10S62/00; Y10S62/923; Y10S62/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD OF KRYPTON AND XENON RECOVERY AND PURIFICATION, COMPRISING, A STREAM OF COOLED COMPRESSED AIR PASSED INTO CONTACT WITH SILICA GEL TO ABSORB THE KRYPTON AND XENON AND HYDROCARBON IMPURITIES FROM THE AIR STREAM, DESORBING THE KRYPTON AND XENON AND IMPURITIES FROM THE SILICA GEL BY PASSING A WARM STREAM OF NITROGEN INTO CONTACT WITH SAID SILICA GEL AND SELECTIVELY CONDENSING
Claim 2
Independent Claim
62 words
A METHOD OF KRYPTON AND XENON RECOVERY AND PURIFICATION, COMPRISING, A STREAM OF COOLED COMPRESSED AIR PASSED INTO CONTACT WITH SILICA GEL TO ABSORB THE KRYPTON AND XENON AND HYDROCARBON IMPURITIES FROM THE AIR STREAM, DESORBING THE KRYPTON AND XENON AND IMPURITIES FROM THE SILICA GEL BY PASSING A WARM STREAM OF NITROGEN INTO CONTACT WITH SAID SILICA GEL AND SELECTIVELY CONDENSING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-03 | 1958-07-05 | 1959-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-03 | 1962-07-05 | 1963-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-03 | 1966-07-05 | 1967-01-04 | $7700.00 | Window Closed / Lapsed |