US2943702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas chromatography
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-05-17
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Granted: 1960-07-05
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Expires: 1977-05-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Boyd E Hudson
- 👤 Arthur E Messner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:39
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/281; B01J20/282; B01J20/283; B01J2220/00; B01J2220/50; B01J2220/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
A METHOD OF SEPARATING OXYGENATED COMPOUNDS FROM A MIXTURE CONTAINING AT LEAST 2 VOLATILE OXYGENATED ORGANIC COMPOUNDS SELECTED FROM THE GOUP CONSISTING OF ETHERS, CARBONYLS, PRIMARY, SECONDARY AND TETRIARY ALCOHOLS WHICH COMPRISES PASSING SAID MIXTURE IN A VAPOR PHASE WITH AN INERT CARRIER GAS THROUGH A LIQUID PARTITION ZONE CONTAINING A SUBSTRATE COMPRISING A FILM OF A LIQUID NON-VOLATILE ORGANIC POLYHYDROXY COMPOUND, CONTAINING AT LEAST 1 HYDROXYL GROUP PER 3 CARBON ATOMS AND HAVING A MOLECULAR WEIGHT BETWEEN 62 AND 182, SUPPORTED ON A FINELY DIVIDED POROUS INERT CARRIER AT A TEMPERATURE BETWEEN THE FREEZING POINT OF THE SUBSTRATE AND 150% C. AT AN INLET PRESSUR OF 0 TO 50 P.S.I.G., WHEREBY SAID SUBSTRATE RETAINS THE INDIVIDUAL OXYGENATED COMPONENTS OF SAID MIXTURE FOR DIFFERENT PERIODS OF TIME AND WHEREBY SAID COMPONENTS EMERGE SEQUENTIALLY IN THE FOLLOWING ORDER: ETHERS, CARBONYLS, TETRIARY ALCOHOLS, SECONDARY ALCOHOLS AND PRIMARY ALCOHOLS.
Claim 2
Independent Claim
146 words
A METHOD OF SEPARATING OXYGENATED COMPOUNDS FROM A MIXTURE CONTAINING AT LEAST 2 VOLATILE OXYGENATED ORGANIC COMPOUNDS SELECTED FROM THE GOUP CONSISTING OF ETHERS, CARBONYLS, PRIMARY, SECONDARY AND TETRIARY ALCOHOLS WHICH COMPRISES PASSING SAID MIXTURE IN A VAPOR PHASE WITH AN INERT CARRIER GAS THROUGH A LIQUID PARTITION ZONE CONTAINING A SUBSTRATE COMPRISING A FILM OF A LIQUID NON-VOLATILE ORGANIC POLYHYDROXY COMPOUND, CONTAINING AT LEAST 1 HYDROXYL GROUP PER 3 CARBON ATOMS AND HAVING A MOLECULAR WEIGHT BETWEEN 62 AND 182, SUPPORTED ON A FINELY DIVIDED POROUS INERT CARRIER AT A TEMPERATURE BETWEEN THE FREEZING POINT OF THE SUBSTRATE AND 150% C. AT AN INLET PRESSUR OF 0 TO 50 P.S.I.G., WHEREBY SAID SUBSTRATE RETAINS THE INDIVIDUAL OXYGENATED COMPONENTS OF SAID MIXTURE FOR DIFFERENT PERIODS OF TIME AND WHEREBY SAID COMPONENTS EMERGE SEQUENTIALLY IN THE FOLLOWING ORDER: ETHERS, CARBONYLS, TETRIARY ALCOHOLS, SECONDARY ALCOHOLS AND PRIMARY ALCOHOLS.
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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |