US2642955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas separation by adsorption
Assignee: Alcoa Corp
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Filing: 1947-06-25
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Granted: 1953-06-23
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Expires: 1967-06-25
Abstract
No abstract record available.
Inventors
- 👤 Richard L Huntington
- 👤 Laurance S Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:41
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/06; B01D53/08; B01D2253/00; B01D2253/10; B01D2253/102; B01D2253/104; B01D2253/106; B01D2256/00; B01D2256/24; B01D2256/245; B01D2257/00; B01D2257/80; B01D2259/00; B01D2259/40; B01D2259/40011; B01D2259/40077; B01D2259/40081; B01D2259/40083; B01D2259/40088; B01D2259/4009; B01D53/26; B01D53/261
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
123 words
IN A CYCLIC METHOD FOR REMOVING AN ADSORBABLE COMPONENT FROM GAS CONTAINING THE SAME, THE COMBINATION OF STEPS COMPRISING DIVIDING RAW GAS FROM A PRESSURED SOURCE THEREOF INTO A MAJOR PORTION AND A MINOR PORTION, REDUCING THE PRESSURE OF SAID MAJOR PORTION AND THEN FLOWING THE SAME INTO A RELATIVELY COOL ADSORBING ZONE COUNTERCURRENT TO THE PREGRESSION OF A SUBSTANTIALLY CONTINUOUS MASS OF SORBENT PARTICLES MOVING THROUGH AND FROM SAID ZONE TOWARD AND INTO A HOTTER REGENERATIVE ZONE, PASSING THE MAJOR PORTION OF GAS FROM THE TOP OF ADSORBING ZONE AS TREATED GAS, HEATING THE SAID MINOR PORTION OF THE RAW GAS, PASSING SAID HEATED PORTION INTO CONTACT WITH SORBENT PARTICLES IN THE REGENERATIVE ZONE, PASSING ALL OF SAID HEATED MINOR GAS POR-
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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) | 1956-06-22 | 1956-12-22 | 1957-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-22 | 1960-12-22 | 1961-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-22 | 1964-12-22 | 1965-06-23 | $7700.00 | Window Closed / Lapsed |