Patent US3023841A successfully refreshed from Google Patents.
US3023841A
Expired / Lapsed
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Desorption of oxygen-contaminated molecular sieves
Assignee: Union Carbide Corp
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Filing: 1957-10-22
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Granted: 1962-03-06
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Expires: 1977-10-22
Abstract
No abstract record available.
Inventors
- 👤 Robert M Milton
- 👤 Robert A Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:03
CPC Classifications
C; C01; C01B; C01B23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS FOR TREATING AN OXYGEN-CONTAMINATED CRYSTALLINE ZEOLITIC MOLECULAR SIEVE HAVING A PORE SIZE WHICH WILL ADMIT MOLECULES HAVING A MAXIMUM EFFECTIVE DIAMETER OF 4 A. AND EXCLUDE LARGER MOLECULES WHICH COMPRISES HEATING THE SAID OXYGEN-CONTAMINATED MOLECULAR SIEVE AT A TEMPERATURE OF AT LEAST 0*C. IN AN ATMOSPHERE OF AT LEAST ONE GAS SELECTED FROM THE GROUP CONSISTING OF DRY NITROGEN AND DRY ARGON; PURGING SUCH SELECTED GAS FROM THE HEATED MOLECULAR SIEVE WITH A GAS DISPLACE-
Claim 2
Dependent Claim
77 words
A PROCESS FOR TREATING AN OXYGEN-CONTAMINATED CRYSTALLINE ZEOLITIC MOLECULAR SIEVE HAVING A PORE SIZE WHICH WILL ADMIT MOLECULES HAVING A MAXIMUM EFFECTIVE DIAMETER OF 4 A. AND EXCLUDE LARGER MOLECULES WHICH COMPRISES HEATING THE SAID OXYGEN-CONTAMINATED MOLECULAR SIEVE AT A TEMPERATURE OF AT LEAST 0*C. IN AN ATMOSPHERE OF AT LEAST ONE GAS SELECTED FROM THE GROUP CONSISTING OF DRY NITROGEN AND DRY ARGON; PURGING SUCH SELECTED GAS FROM THE HEATED MOLECULAR SIEVE WITH A GAS DISPLACE-
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) | 1965-03-05 | 1965-09-04 | 1966-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-05 | 1969-09-04 | 1970-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-05 | 1973-09-04 | 1974-03-06 | $7700.00 | Window Closed / Lapsed |