US2890253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation process
Assignee: Shell Development Co
•
Filing: 1956-05-16
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Granted: 1959-06-09
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Expires: 1976-05-16
Abstract
No abstract record available.
Inventors
- 👤 Richard D Mullineaux
- 👤 John H Raley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:31
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 CONVERTING AN IODINE-REACTIVE HYDROCARBON BY REACTION WITH A REACTIVE PROPORTION OF ELEMENTAL IODINE INTO A HYDROCARBON HAVING A HIGHER CARBORTO-HYDROGEN RATIO WHICH COMPRISES ADDING TO A MIXTURE COMPRISING SAID FIRST HYDROCARBON AND HYDROGEN IODIDE IN VAPOR PHASE AT A TEMPERATURE IN EXCESS OF 450* C. AN AMOUNT OF FREE OXYGEN NOT EXCEEDING 1 MOLECULAR WEIGHT PROPORTION PER ATOMIC WEIGHT PROPORTION OF IODINE IN ALL ACTIVE IODINE SPECIES PRESENT AT THE POINT OF ADDITION TO PRODUCE A MIXTURE COMPRISING SAID FRIST HYDROCARBON AND AT LEAST 0.2 ATOMIC WEIGHT PROPORTION OF IODINE PER MOLE OF HYDROCARBON, AND SUBJECTING THE LATTER MIXTURE TO A TEMPERATURE OF AT LEAST 450* C. FOR A NOMINAL RESIDENCE TIME OF FROM 0.01 SECOND TO 5 MINUTES IN VAPOR PHASE TO CONVERT AT LEAST PART OF SAID FIRST HYDROCARBON AND IODINE TO SAID SECOND HYDROCARBON AND HYDROGEN IODIDE.
Claim 2
Dependent Claim
143 words
A PROCESS FOR CONVERTING AN IODINE-REACTIVE HYDROCARBON BY REACTION WITH A REACTIVE PROPORTION OF ELEMENTAL IODINE INTO A HYDROCARBON HAVING A HIGHER CARBORTO-HYDROGEN RATIO WHICH COMPRISES ADDING TO A MIXTURE COMPRISING SAID FIRST HYDROCARBON AND HYDROGEN IODIDE IN VAPOR PHASE AT A TEMPERATURE IN EXCESS OF 450* C. AN AMOUNT OF FREE OXYGEN NOT EXCEEDING 1 MOLECULAR WEIGHT PROPORTION PER ATOMIC WEIGHT PROPORTION OF IODINE IN ALL ACTIVE IODINE SPECIES PRESENT AT THE POINT OF ADDITION TO PRODUCE A MIXTURE COMPRISING SAID FRIST HYDROCARBON AND AT LEAST 0.2 ATOMIC WEIGHT PROPORTION OF IODINE PER MOLE OF HYDROCARBON, AND SUBJECTING THE LATTER MIXTURE TO A TEMPERATURE OF AT LEAST 450* C. FOR A NOMINAL RESIDENCE TIME OF FROM 0.01 SECOND TO 5 MINUTES IN VAPOR PHASE TO CONVERT AT LEAST PART OF SAID FIRST HYDROCARBON AND IODINE TO SAID SECOND HYDROCARBON AND HYDROGEN IODIDE.
References Cited (Backward Citations)
US1925421A
Cited
US2259195A
Cited
FR849804A
Cited
US2315499A
Cited
US2327174A
Cited
US2343108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |