US2949745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of separation of gaseous mixtures in a heat exchange apparatus
Assignee: Air Liquide SA
•
Filing: 1956-02-21
•
Granted: 1960-08-23
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Etienne Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:30
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/0228; F25J3/0233; F25J3/0204; F25J3/0219; F25J3/0238; F25J5/00; F25J5/002; F25J5/007; F25J2200/00; F25J2200/80; F25J2210/00; F25J2210/14; F25J2215/00; F25J2215/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS OF SEPARATION OF COKE OVEN GASEOUS MIXTURES IN A HEAT EXCHANGE APPARATUS, COMPRISING PASSING A GASEOUS MIXTURE ON THE OUTSIDE OF THE HEAT EXCHANGE SURFACE OF THE APPARATUS AND PARTLY LIQUEFYING IT, P A LIQUID MIXTURE CONTAINING ETHYLENE ON THE INSIDE OF THE HEAT EXCHANGE SURFACE AS A RELATIVELY THIN LAYER FLOWING DOWN BY GRAVITY ON SAID HEAT EXCHANGE SURFACE AND
Claim 2
Dependent Claim
63 words
A PROCESS OF SEPARATION OF COKE OVEN GASEOUS MIXTURES IN A HEAT EXCHANGE APPARATUS, COMPRISING PASSING A GASEOUS MIXTURE ON THE OUTSIDE OF THE HEAT EXCHANGE SURFACE OF THE APPARATUS AND PARTLY LIQUEFYING IT, P A LIQUID MIXTURE CONTAINING ETHYLENE ON THE INSIDE OF THE HEAT EXCHANGE SURFACE AS A RELATIVELY THIN LAYER FLOWING DOWN BY GRAVITY ON SAID HEAT EXCHANGE SURFACE AND
References Cited (Backward Citations)
US1323014A
Cited
US1212455A
Cited
US1579348A
Cited
FR591095A
Cited
US1913805A
Cited
GB360487A
Cited
US1913628A
Cited
US1963841A
Cited
US2084334A
Cited
US2503265A
Cited
US2668424A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |