US3301792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of molecular sieves
Assignee: Skelly Oil Co
•
Filing: 1964-09-29
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Granted: 1967-01-31
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Expires: 1984-09-29
Abstract
No abstract record available.
Inventors
- 👤 Lewallen William Joseph
- 👤 Wood Joseph Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:16
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408; Y; Y10; Y10S; Y10S502/00; Y10S502/515; Y10S502/517
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A PROCESS FOR REACTIVATING CRYSTALLINE ZEOLITIC MOLECULAR SIEVES WHICH COMPRISES ALTERNATELY OXIDIZING AND QUENCHING OXIDATION OF A MASS OF MOLECULAR SIEVE PELLETS, THE SAID OXIDATION BEING CARRIED OUT AT A TEMPERATURE IN THE RANGE FROM ABOUT 700 TO 1000*F. FOR SHORT PERIODS NOT SUBSTANTIALLY IN EXCESS OF 0.4 SECOND.
Claim 2
Dependent Claim
49 words
A PROCESS FOR REACTIVATING CRYSTALLINE ZEOLITIC MOLECULAR SIEVES WHICH COMPRISES ALTERNATELY OXIDIZING AND QUENCHING OXIDATION OF A MASS OF MOLECULAR SIEVE PELLETS, THE SAID OXIDATION BEING CARRIED OUT AT A TEMPERATURE IN THE RANGE FROM ABOUT 700 TO 1000*F. FOR SHORT PERIODS NOT SUBSTANTIALLY IN EXCESS OF 0.4 SECOND.
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |