US3207810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated hydrocarbon production
Assignee: Petro Tex Chemical Corp
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Filing: 1962-12-04
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Granted: 1965-09-21
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Expires: 1982-12-04
Abstract
No abstract record available.
Inventors
- 👤 Bajars Laimonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:53
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/54; C07C5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
THE METHOD FOR DEHYDROGENATING ALIPHATIC HYDROCARBONS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE OF AT LEAST ABOUT 450*C. AN ALIPHATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF N-BUTANE, N-BUTENE, METHYL BUTENE, AND MIXTURES THEREOF, WITH OXYGEN IN A MOLAR RATIO OF ABOUT 0.25 TO ABOUT 1.75 MOL OF OXYGEN PER MOL OF SAID ALIPHATIC HYDROCARBON, IODINE IN A MOLAR RATIO OF AT LEAST ABOUT 0.001 TO 0.05 MOL OF IODINE PER MOL OF SAID ALIPHATIC HYDROCARBON, THE PARTIAL PRESSURE OF THE SAID ALIPHATIC HYDROCARBON BEING EQUIVALENT TO NO GREATER THAN 6 INCHES OF MERCURY AT A TOTAL PRESSURE OF ONE ATMOSPHERE, WITH A CATALYST COMPRISING BISMUTH OXIDE, THE RATIO OF THE MOLS OF SAID OXYGEN TO THE MOLS OF SAID IODINE BEING GREATER THAN TWO, WITH BISMUTH CONSTITUTING AT LEAST FIFTY ATOMIC WEIGHT PERCENT OF ANY METAL ATOMS IN THE CATALYTIC SURFACE EXPOSED TO THE REACTION GASES.
Claim 2
Independent Claim
150 words
THE METHOD FOR DEHYDROGENATING ALIPHATIC HYDROCARBONS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE OF AT LEAST ABOUT 450*C. AN ALIPHATIC HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF N-BUTANE, N-BUTENE, METHYL BUTENE, AND MIXTURES THEREOF, WITH OXYGEN IN A MOLAR RATIO OF ABOUT 0.25 TO ABOUT 1.75 MOL OF OXYGEN PER MOL OF SAID ALIPHATIC HYDROCARBON, IODINE IN A MOLAR RATIO OF AT LEAST ABOUT 0.001 TO 0.05 MOL OF IODINE PER MOL OF SAID ALIPHATIC HYDROCARBON, THE PARTIAL PRESSURE OF THE SAID ALIPHATIC HYDROCARBON BEING EQUIVALENT TO NO GREATER THAN 6 INCHES OF MERCURY AT A TOTAL PRESSURE OF ONE ATMOSPHERE, WITH A CATALYST COMPRISING BISMUTH OXIDE, THE RATIO OF THE MOLS OF SAID OXYGEN TO THE MOLS OF SAID IODINE BEING GREATER THAN TWO, WITH BISMUTH CONSTITUTING AT LEAST FIFTY ATOMIC WEIGHT PERCENT OF ANY METAL ATOMS IN THE CATALYTIC SURFACE EXPOSED TO THE REACTION GASES.
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 |