US3756961A
Expired / Lapsed
US
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Orbents regeneration of molecular sieves with regeneration of solid water ads
Assignee: Texaco Inc
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Filing: 1971-06-02
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Granted: 1973-09-04
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Expires: 1991-06-02
Abstract
Abstract A PROCESS FOR REGENERATING A BED OF COKE-CONTAINING CRYSTALLINE ZEOLITIC MOLECULAR SIEVES BY CONTINUOUSLY PASSING A CLOSED-LOOP FLOW OF HOT, OXYGEN-CONTAINING INERT GAS THROUGH THE MOLECULAR SEIVE BED, WHEREIN WATER IN THE CIRCULATING GAS STREAM IS MAINTAINED BELOW A PRESELECTED CONCENTRATION.
Inventors
- 👤 J Francis
- 👤 R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:32
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408; C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |