Patent US3207811A successfully refreshed from Google Patents.
US3207811A
Expired / Lapsed
US
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Dehydrogenation process
Assignee: Petro Tex Chemical Corp
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Filing: 1962-12-13
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Granted: 1965-09-21
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Expires: 1982-12-13
Abstract
No abstract record available.
Inventors
- 👤 Bajars Laimonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:58
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/54; C07C5/56; B; B01; B01J; B01J23/00; B01J27/00; B01J27/06; B01J23/90; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
THE METHOD FOR DEHYDROGENING ALIPHATIC HYDROCARBONS OF 4 TO 6 CARBON ATOMS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE OF AT LEAST 450*C. AN ALIPHATIC HYDROCARBON OF 4 TO 6 CARBON ATOMS WITH OXYGEN IN A MOLAR RATIO OF ABOVE ABOUT ONE-FOURTH MOL OF OXYGEN PER MOL OF SAID HYDROCARBON, FROM ABOUT 0.01 TO LESS THAN 0.5 MOL OF CHLORINE PER MOL OF SAID HYDROCARBON, THE PARTIAL PRESSURE OF SAID HYDROCARBON BEING EQUIVALENT TO NO GREATER THAN 6 INCHES OF MERCURY AT A TOTAL PRESSURE OF ONE ATMOSPHERE WITH A CATALYST CONSISTING ESSENTIALLY OF METALS, OXIDES, SALTS AND HYDROXIDES OF IRON, THE SAID CATALYST BEING PRESENT IN AN AMOUNT OF AT LEAST 40 SQUARE FEET OF CATALYST SURFACE PER CUBIC FOOT OF REACTION ZONE CONTAINING CATALYST, THE RATIO OF THE MOLS OF OXYGEN TO THE MOLS OF CHLORINE BEING AT LEAST FOUR.
Claim 2
Independent Claim
145 words
THE METHOD FOR DEHYDROGENING ALIPHATIC HYDROCARBONS OF 4 TO 6 CARBON ATOMS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE OF AT LEAST 450*C. AN ALIPHATIC HYDROCARBON OF 4 TO 6 CARBON ATOMS WITH OXYGEN IN A MOLAR RATIO OF ABOVE ABOUT ONE-FOURTH MOL OF OXYGEN PER MOL OF SAID HYDROCARBON, FROM ABOUT 0.01 TO LESS THAN 0.5 MOL OF CHLORINE PER MOL OF SAID HYDROCARBON, THE PARTIAL PRESSURE OF SAID HYDROCARBON BEING EQUIVALENT TO NO GREATER THAN 6 INCHES OF MERCURY AT A TOTAL PRESSURE OF ONE ATMOSPHERE WITH A CATALYST CONSISTING ESSENTIALLY OF METALS, OXIDES, SALTS AND HYDROXIDES OF IRON, THE SAID CATALYST BEING PRESENT IN AN AMOUNT OF AT LEAST 40 SQUARE FEET OF CATALYST SURFACE PER CUBIC FOOT OF REACTION ZONE CONTAINING CATALYST, THE RATIO OF THE MOLS OF OXYGEN TO THE MOLS OF CHLORINE BEING AT LEAST FOUR.
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) | 1968-09-20 | 1969-03-22 | 1969-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-20 | 1973-03-22 | 1973-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-20 | 1977-03-22 | 1977-09-21 | $7700.00 | Window Closed / Lapsed |