US3207808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation
Assignee: Petro Tex Chemical Corp
•
Filing: 1962-12-04
•
Granted: 1965-09-21
•
Expires: 1982-12-04
Abstract
No abstract record available.
Inventors
- 👤 Bajars Laimonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:02
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/42; C07C5/54; C07C5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
166 words
THE METHOD FOR DEHYDROGENATING ALIPHATIC HYDROCARBONS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE GREATER THAN 400*C. AN ALIPHATIC HYDROCARBON OF 4 TO 6 CARBON ATOMS WITH OXYGEN IN A MOLAR RATIO OF GREATER THAN ONE-FOURTH MOL OF OXYGEN PER MOL OF SAID ALIPHATIC HYDROCARBON, AT LEAST ABOUT 0.001 TO 0.05 MOL OF IODINE PER MOL OF SAID ALIPHATIC HYDROCARBON, THE INITIAL PARTIAL PRESSURE OF SAID ALIPHATIC HYDROCARBON BEING EQUIVALENT TO NO GREATER THAN ABOUT 10 INCHES OF MERCURY AT ONE ATMOSPHERE TOTAL PRESSURE, WITH A SOLID CATALYST CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF METALS, OXIDES, HYDROXIDES AND SALTS OF TITANIUM, ZIRCONIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, TUNGSTEN, MOLYBDENUM, MANGANESE, THORIUM, URANIUM, LANTHANUM SERIES ELEMENTS, AND MIXTURES THEREOF, THE RATIO OF THE MOLS OF SAID OXYGEN TO THE MOLS OF SAID IODINE BEING GREATER THAN TWO, THE SAID CATALYST SURFACE BEING PRESENT IN AN AMOUNT OF GREATER THAN 40 SQUARE FEET OF CATALYST SURFACE PER CUBIC FOOT OF REACTION ZONE.
Claim 2
Independent Claim
166 words
THE METHOD FOR DEHYDROGENATING ALIPHATIC HYDROCARBONS WHICH COMPRISES HEATING IN THE VAPOR PHASE AT A TEMPERATURE GREATER THAN 400*C. AN ALIPHATIC HYDROCARBON OF 4 TO 6 CARBON ATOMS WITH OXYGEN IN A MOLAR RATIO OF GREATER THAN ONE-FOURTH MOL OF OXYGEN PER MOL OF SAID ALIPHATIC HYDROCARBON, AT LEAST ABOUT 0.001 TO 0.05 MOL OF IODINE PER MOL OF SAID ALIPHATIC HYDROCARBON, THE INITIAL PARTIAL PRESSURE OF SAID ALIPHATIC HYDROCARBON BEING EQUIVALENT TO NO GREATER THAN ABOUT 10 INCHES OF MERCURY AT ONE ATMOSPHERE TOTAL PRESSURE, WITH A SOLID CATALYST CONSISTING ESSENTIALLY OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF METALS, OXIDES, HYDROXIDES AND SALTS OF TITANIUM, ZIRCONIUM, VANADIUM, NIOBIUM, TANTALUM, CHROMIUM, TUNGSTEN, MOLYBDENUM, MANGANESE, THORIUM, URANIUM, LANTHANUM SERIES ELEMENTS, AND MIXTURES THEREOF, THE RATIO OF THE MOLS OF SAID OXYGEN TO THE MOLS OF SAID IODINE BEING GREATER THAN TWO, THE SAID CATALYST SURFACE BEING PRESENT IN AN AMOUNT OF GREATER THAN 40 SQUARE FEET OF CATALYST SURFACE PER CUBIC FOOT OF REACTION ZONE.
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 |