US2597385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation of gas mixtures
Assignee: Air Products Inc
•
Filing: 1946-02-11
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Granted: 1952-05-20
•
Expires: 1966-02-11
Abstract
No abstract record available.
Inventors
- 👤 Clarence J Schilling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:26
CPC Classifications
F; F25; F25J; F25J3/00; F25J3/02; F25J3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
IN A LIQUID AIR FRACTIONATING COLUMN HAVING A SERIES OF BUBBLE PLATES EACH HAVING A DOWNCOMER, AND A RESERVOIR FOR THE RECEPTION OF LIQUID OXYGEN: A RECEPTACLE ARRANGED BELOW THE FINAL PLATE OF SAID SERIES TO SEAL THE DOWNCOMER FROM SAID PLATE, SAID RECEPTACLE HAVING AN OPENING FOR THE OVERFLOW OF EXCESS LIQUID TO SAID RESERVOIR, AND A CONDUIT ARRANGED TO CONDUCT LIQUID FROM SAID RECEPTACLE TO THE EXTERIOR OF SAID COLUMN.
Claim 2
Dependent Claim
72 words
IN A LIQUID AIR FRACTIONATING COLUMN HAVING A SERIES OF BUBBLE PLATES EACH HAVING A DOWNCOMER, AND A RESERVOIR FOR THE RECEPTION OF LIQUID OXYGEN: A RECEPTACLE ARRANGED BELOW THE FINAL PLATE OF SAID SERIES TO SEAL THE DOWNCOMER FROM SAID PLATE, SAID RECEPTACLE HAVING AN OPENING FOR THE OVERFLOW OF EXCESS LIQUID TO SAID RESERVOIR, AND A CONDUIT ARRANGED TO CONDUCT LIQUID FROM SAID RECEPTACLE TO THE EXTERIOR OF SAID COLUMN.
References Cited (Backward Citations)
US1068219A
Cited
US1880981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-20 | 1955-11-19 | 1956-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-20 | 1959-11-19 | 1960-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-20 | 1963-11-19 | 1964-05-20 | $7700.00 | Window Closed / Lapsed |