US3069363A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of molecular sieves
Assignee: Union Carbide Corp
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Filing: 1960-05-04
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Granted: 1962-12-18
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Expires: 1980-05-04
Abstract
No abstract record available.
Inventors
- 👤 Rolland L Mays
- 👤 Harrison B Rhodes
- 👤 Fred W Leavitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:31
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/30; B01J20/34; B01J20/3408
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR REACTIVATING A CRYSTALLINE ZEOLITIC MOLECULAR SIEVE BY OXIDATIVE REMOVAL OF NONVOLATILE CARBONACEOUS MATTER THEREFROM, THE CRYSTAL STRUCTURE OF SAID MOLECULAR SIEVE BEING STABLE AT TEMPERATURES UP TO ABOUT 1290*F., WHICH PROCESS COMPRISES: PROVIDING A GAS CONTAINING BETWEEN ABOUT 20 MOL PERCENT AND ABOUT 100 MOLPERCENT OXYGEN AND A WATER VAPOR CONCENTRATION LESS THAN ABOUT 4 P.S.I.A. AND INITIALLY CONTACTING SAID GAS WITH ZEOLITIC MOLECULAR SIEVE CONTAINING LESS THAN ABOUT 1.2% BY WEIGHT OF NONVOLATILE CARBONACEOUS MATTER AT A FLOW RATE OF A LEAST 1 POUND OF OXYGEN PER HOUR PER SQUARE FOOT OF MOLECULAR SIEVE BED CROSS SECTION, AND AT A COMBUSTION TEMPERATURE WHICH IS AT LEAST THE IGNITION TEMPERATURE OF SAID CARBONACEOUS MATTER AND BELOW THE VALUE EXPRESSED BY THE FOLLOWING FORMULA TO BURN SUCH MATTER:
Claim 2
Dependent Claim
130 words
A PROCESS FOR REACTIVATING A CRYSTALLINE ZEOLITIC MOLECULAR SIEVE BY OXIDATIVE REMOVAL OF NONVOLATILE CARBONACEOUS MATTER THEREFROM, THE CRYSTAL STRUCTURE OF SAID MOLECULAR SIEVE BEING STABLE AT TEMPERATURES UP TO ABOUT 1290*F., WHICH PROCESS COMPRISES: PROVIDING A GAS CONTAINING BETWEEN ABOUT 20 MOL PERCENT AND ABOUT 100 MOLPERCENT OXYGEN AND A WATER VAPOR CONCENTRATION LESS THAN ABOUT 4 P.S.I.A. AND INITIALLY CONTACTING SAID GAS WITH ZEOLITIC MOLECULAR SIEVE CONTAINING LESS THAN ABOUT 1.2% BY WEIGHT OF NONVOLATILE CARBONACEOUS MATTER AT A FLOW RATE OF A LEAST 1 POUND OF OXYGEN PER HOUR PER SQUARE FOOT OF MOLECULAR SIEVE BED CROSS SECTION, AND AT A COMBUSTION TEMPERATURE WHICH IS AT LEAST THE IGNITION TEMPERATURE OF SAID CARBONACEOUS MATTER AND BELOW THE VALUE EXPRESSED BY THE FOLLOWING FORMULA TO BURN SUCH MATTER:
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) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |