US2615312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for eliminating impurities during the separation of gas mixtures
Assignee: Union Carbide Corp
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Filing: 1949-05-07
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Granted: 1952-10-28
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Expires: 1969-05-07
Abstract
No abstract record available.
Inventors
- 👤 Edward F Yendall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:29
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/08; F25J2210/00; F25J2210/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR LIMITING THE ACCUMULATION OF HYDROCARBON IMPURITIES IN AN OXYGEN-RICH PRODUCT IN A SYSTEM FOR LOW TEMPERATURE SEPARATION OF AIR THAT INCLUDES A ZONE IN WHICH SAID PRODUCT IS COLLECTED AND PARTIALLY VAPORIZED, WHICH PROCESS COMPRISES WITHDRAWING LIQUID OXYGEN PRODUCT FROM SAID ZONE; FORCING SUCH WITHDRAWN LIQUID INTO INTIMATE CONTACT WITH AN ADSORBENT MATERIAL THAT IS INERT TO OXYGEN AND SELECTIVELY RETAINS HYDROCARBON IMPURITIES INCLUDING ACETYLENE IN A FLASH-SAFE MANNER; PASSING THE WITHDRAWN CLEANED LIQUID TO A SEPARATE VAPORIZING ZONE AND SUBJECTING IT TO VAPORIZIATION THEREIN; AND RECIRCULATING A PORTION OF THE LIQUID FROM SAID SEPARATE VAPORIZING ZONE THROUGH SAID ADSORBENT MATERIAL AND BACK TO SAID SEPARATE VAPORIZING ZONE.
Claim 2
Dependent Claim
111 words
A PROCESS FOR LIMITING THE ACCUMULATION OF HYDROCARBON IMPURITIES IN AN OXYGEN-RICH PRODUCT IN A SYSTEM FOR LOW TEMPERATURE SEPARATION OF AIR THAT INCLUDES A ZONE IN WHICH SAID PRODUCT IS COLLECTED AND PARTIALLY VAPORIZED, WHICH PROCESS COMPRISES WITHDRAWING LIQUID OXYGEN PRODUCT FROM SAID ZONE; FORCING SUCH WITHDRAWN LIQUID INTO INTIMATE CONTACT WITH AN ADSORBENT MATERIAL THAT IS INERT TO OXYGEN AND SELECTIVELY RETAINS HYDROCARBON IMPURITIES INCLUDING ACETYLENE IN A FLASH-SAFE MANNER; PASSING THE WITHDRAWN CLEANED LIQUID TO A SEPARATE VAPORIZING ZONE AND SUBJECTING IT TO VAPORIZIATION THEREIN; AND RECIRCULATING A PORTION OF THE LIQUID FROM SAID SEPARATE VAPORIZING ZONE THROUGH SAID ADSORBENT MATERIAL AND BACK TO SAID SEPARATE VAPORIZING ZONE.
References Cited (Backward Citations)
US1891125A
Cited
GB413518A
Cited
US2256421A
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US2337474A
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US2464891A
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US2514921A
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US2500136A
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US2502250A
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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) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |