Patent US2735271A successfully refreshed from Google Patents.
US2735271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
evans
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
•
Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:52
CPC Classifications
C; C07; C07C; C07C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A METHOD FOR DEHYDRATING A LIQUEFIELD PETROLEUM GAS CONTAINING MOISTURE AND STORED IN A TANK UNDER SUPERATMOSPHERIC PRESSURE COMPRISING WITHDRAWING VAPOR FROM SAID STORAGE TANK, INTRODUCING THE WITHDRAWN VAPOR INTO A TREATING ZONE MAINTAINED UNDER A PRESSURE BELOW SAID SUPERATMOSPHERIC PRESSURE, WITHDRAWING LIQUEFIED GAS FROM SAID STORAGE TANK, INTRODUCING THE WITHDRAWN LIQUID INTO SAID TREATING ZONE WHEREBY THE INTRODUCED LIQUEFIED GAS VAPORIZES AND COOLS THE VAPOR CONTENTS OF THE TREATING ZONE BY DIRECT HEAT EXCHANGE TO A TEMPERATURE BELOW THE DEW POINT OF THE VAPOR IN THE TREATING ZONE, FROM SAID TREATING ZONE WITHDRAWING COOLED VAPOR HAVING A LOWER MOISTURE CONTENT THAN THE MOISTURE CONTENT OF THE VAPOR INTRODUCED INTO SAID TREATING ZONE, COMPRESSING THIS WITHDRAWN LOWER MOISTURE CONTENT VAPOR AND INTRODUCING THE COMPRESSED VAPOR INTO THE LIQUID PHASE IN THE STORAGE TANK.
Claim 2
Independent Claim
133 words
A METHOD FOR DEHYDRATING A LIQUEFIELD PETROLEUM GAS CONTAINING MOISTURE AND STORED IN A TANK UNDER SUPERATMOSPHERIC PRESSURE COMPRISING WITHDRAWING VAPOR FROM SAID STORAGE TANK, INTRODUCING THE WITHDRAWN VAPOR INTO A TREATING ZONE MAINTAINED UNDER A PRESSURE BELOW SAID SUPERATMOSPHERIC PRESSURE, WITHDRAWING LIQUEFIED GAS FROM SAID STORAGE TANK, INTRODUCING THE WITHDRAWN LIQUID INTO SAID TREATING ZONE WHEREBY THE INTRODUCED LIQUEFIED GAS VAPORIZES AND COOLS THE VAPOR CONTENTS OF THE TREATING ZONE BY DIRECT HEAT EXCHANGE TO A TEMPERATURE BELOW THE DEW POINT OF THE VAPOR IN THE TREATING ZONE, FROM SAID TREATING ZONE WITHDRAWING COOLED VAPOR HAVING A LOWER MOISTURE CONTENT THAN THE MOISTURE CONTENT OF THE VAPOR INTRODUCED INTO SAID TREATING ZONE, COMPRESSING THIS WITHDRAWN LOWER MOISTURE CONTENT VAPOR AND INTRODUCING THE COMPRESSED VAPOR INTO THE LIQUID PHASE IN THE STORAGE TANK.
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |