Patent US3374283A successfully refreshed from Google Patents.
US3374283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon dehydrogenation in the presence of oxygen, iodine and cobalt
Assignee: Petro Tex Chemical Corp
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Filing: 1965-03-11
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Granted: 1968-03-19
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Expires: 1985-03-11
Abstract
No abstract record available.
Inventors
- 👤 Bajars Laimonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:19
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/54; C07C5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
THE METHOD FOR PREPARING ALIPHATIC DIOLEFINS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE IN THE RANGE OF ABOUT 400*C. TO ABOUT 800*C. A MONOOLEFINIC HYDROCARBON CONTAINING 4 TO 6 CARBON ATOMS WITH OXYGEN IN A MOLAR RATIO OF ABOUT ONE-FOURTH TO ABOUT TWO MOLS OF OXYGEN PER MOL OF MONO-OLEFIN AN IODINE LIBERATING MATERIAL IN AMOUNT GREATER THAN 0.001 MOL OF IODINE PER MOL OF MONO-OLEFIN, THE PARTIAL PRESSURE OF SAID MONO-OLEFIN BEING LESS THAN ABOUT 20 INCHES MERACURY. IN THE PRESENCE OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF COBALT METAL, INORGANIC COBALT SALTS, COBALT OXIDE AND MIXTURES THEREOF, THE RATIO OF THE AMOUNT OF SAID OXYGEN BEING GREATER THAN 1 MOL PER ATOM OF SAID IODINE.
Claim 2
Independent Claim
122 words
THE METHOD FOR PREPARING ALIPHATIC DIOLEFINS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE IN THE RANGE OF ABOUT 400*C. TO ABOUT 800*C. A MONOOLEFINIC HYDROCARBON CONTAINING 4 TO 6 CARBON ATOMS WITH OXYGEN IN A MOLAR RATIO OF ABOUT ONE-FOURTH TO ABOUT TWO MOLS OF OXYGEN PER MOL OF MONO-OLEFIN AN IODINE LIBERATING MATERIAL IN AMOUNT GREATER THAN 0.001 MOL OF IODINE PER MOL OF MONO-OLEFIN, THE PARTIAL PRESSURE OF SAID MONO-OLEFIN BEING LESS THAN ABOUT 20 INCHES MERACURY. IN THE PRESENCE OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF COBALT METAL, INORGANIC COBALT SALTS, COBALT OXIDE AND MIXTURES THEREOF, THE RATIO OF THE AMOUNT OF SAID OXYGEN BEING GREATER THAN 1 MOL PER ATOM OF SAID IODINE.
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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |