Patent US2921101A successfully refreshed from Google Patents.
US2921101A
Expired / Lapsed
US
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Dehydrogenation process
Assignee: Shell Development Co
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Filing: 1956-09-11
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Granted: 1960-01-12
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Expires: 1976-09-11
Abstract
No abstract record available.
Inventors
- 👤 Robert L Magovern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:42
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/54; C07C5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
A PROCESS FOR THE CONVERSION OF IODINE-REACTIVE ORGANIC COMPOUNDS COMPRISING CONVERTING HYDROGEN IODIDE TO IODINE AND WATER IN VAPOR PHASE BY MEANS OF OXYGEN IN A FIRST REACTION ZONE IMMEDIATELY PRECEDING AND COMMUNICATING WITH A SECOND REACTION ZONE, CONVERTING IODINEREACTIVE COMPOUND IN SAID SECOND REACTION ZONE BY CONTACT IN VAPOR PHASE WITH AT LEAST 25 PERCENT BY WEIGHT OF ELEMENTAL IODINE INCLUDING THAT FORMED IN SAID FIRST REACTION ZONE, CONTACTING VAPOR EFFLUENT FROM SAID SECOND REACTION ZONE WITH AN AQUEOUS SOLVENT COMPRISING WATER AND HYDROGEN IODIDE AT ABOUT THEIR CONSTANT-BOILING MIXTURE RATIO, RECOVERING A RICH SOLVENT PHASE, STRIPPING FROM A SUBSTANTIAL PORTION OF SAID RICH SOLVENT PHASE A VAPOR STREAM HAVING A SUBSTANTIALLY HIGHER CONCENTRATION OF HYDROGEN IODIDE THAN SAID SOLVENT PHASE AND RETURNING AT LEAST A SUBSTANTIAL PORTION OF SAID VAPOR STREAM OF CONCENTRATED HYDROGEN IODIDE TO SAID FIRST REACTION ZONE TO
Claim 2
Dependent Claim
143 words
A PROCESS FOR THE CONVERSION OF IODINE-REACTIVE ORGANIC COMPOUNDS COMPRISING CONVERTING HYDROGEN IODIDE TO IODINE AND WATER IN VAPOR PHASE BY MEANS OF OXYGEN IN A FIRST REACTION ZONE IMMEDIATELY PRECEDING AND COMMUNICATING WITH A SECOND REACTION ZONE, CONVERTING IODINEREACTIVE COMPOUND IN SAID SECOND REACTION ZONE BY CONTACT IN VAPOR PHASE WITH AT LEAST 25 PERCENT BY WEIGHT OF ELEMENTAL IODINE INCLUDING THAT FORMED IN SAID FIRST REACTION ZONE, CONTACTING VAPOR EFFLUENT FROM SAID SECOND REACTION ZONE WITH AN AQUEOUS SOLVENT COMPRISING WATER AND HYDROGEN IODIDE AT ABOUT THEIR CONSTANT-BOILING MIXTURE RATIO, RECOVERING A RICH SOLVENT PHASE, STRIPPING FROM A SUBSTANTIAL PORTION OF SAID RICH SOLVENT PHASE A VAPOR STREAM HAVING A SUBSTANTIALLY HIGHER CONCENTRATION OF HYDROGEN IODIDE THAN SAID SOLVENT PHASE AND RETURNING AT LEAST A SUBSTANTIAL PORTION OF SAID VAPOR STREAM OF CONCENTRATED HYDROGEN IODIDE TO SAID FIRST REACTION ZONE TO
References Cited (Backward Citations)
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US2259195A
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US2276023A
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US2315499A
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US2343108A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |