US2560469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen process
Assignee: Standard Oil Development Co
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Filing: 1946-10-12
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Granted: 1951-07-10
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Expires: 1966-10-12
Abstract
No abstract record available.
Inventors
- 👤 Henry J Ogorzaly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:44
CPC Classifications
F; F25; F25J; F25J5/00; Y; Y10; Y10S; Y10S62/00; Y10S62/912
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
129 words
THE METHOD OF PRODUCING OXYGEN BY THE LIQUEFACTION AND RECTIFICATION OF AIR, WHICH COMPRISES PASSING DOWNWARDLY THROUGH ONE ZONE A MASS OF PELLETS, FLOWING UPWARDLY THROUGH SAID ZONE IN CONTACT WITH SAID PELLETS AND SUBSTANTIALLY UNIFORMYL DISTRIBUTED THERETHROUGHOUT A STREAM OF RECTIFICATION PRODUCT, WITHDRAWING SAID PELLETS FROM THE BASE OF SAID ZONE AT A TEMPERATURE CLOSE TO THAT OF THE INCOMING RECTIFICATION PRODCUT STREAM, PASSING THE WITHDRAWN CHILLED PELLETS DOWNWARDLY THROUGH A SECOND ZONE COUNTERCURRENT TO A RISING STREAM OF AIR SUBSTANTIALLY UNIFORMYL DISTRIBUTED THROUGHOUT THE PELLETS FLOWING THROUGH SAID SECOND ZONE, WITHDRAWING THE AIR FROM SAID SECOND ZONE AT A TEMPERATURE CLOSE TO THAT OF THE INCOMING PELLETS AND WITH DRAWING THE PELLETS FORM SAID SECOND ZONE AND REINTRODUCING THEM INTO THE TOP OF SAID FIRST MENTIONED ZONE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |