Patent US3843918A successfully refreshed from Google Patents.
Patent US3205280A successfully refreshed from Google Patents.
US3205280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation process
Assignee: Shell USA Inc
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Filing: 1961-10-10
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Granted: 1965-09-07
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Expires: 1981-10-10
Abstract
No abstract record available.
Inventors
- 👤 Wattimena Fredy
- 👤 Willem F Engel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:47
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/66; B01J23/02; B01J23/70; B01J23/76; B01J23/78; C; C07; C07C; C07C5/00; C07C5/32; C07C5/321; C07C5/42; C07C5/48; C07C5/54; C07C5/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
THE PROCESS FOR THE CATALYTIC DEHYDROGENATION OF A FIRST HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF PARAFFINS AND OLEFINS TO A CORRESPONDING LESS SATURATED SECOND HYDROCARBON, CONSISTING ESSENTIALLY OF REACTING SAID FIRST HYDROCARBON, IN THE VAPOR PHASE, AT A TEMPERATURE OF FROM ABOUT 375* TO ABOUT 1000*C., WITH A HALOGEN SELECTED FROM THE GROUP CONSISTING OF BROMINE AND IODINE, IN A MOLE RATIO OF SAID HALOGEN TO SAID FIRST HYDROCARBON IN THE RANGE OF FROM ABOUT 0.001:1 TO ABOUT 0.09:1, IN THE PRESENCE OF ADDED FREE OXYGEN, AND OF A SOLID CATALYST CONSISTING ESSENTIALLY OF AN ALKALI METAL HALIDE IN COMBINATION WITH FROM ABOUT 1 TO ABOUT 7 MOLES OF SILVER HALIDE, AND IN THE ADDITIONAL PRESENCE OF FROM ABOUT 1 TO ABOUT 7 MOLES PER MOL OF SAID ALKALI METAL HALIDE OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF THE OXIDES AND HALIDES OF ZIRCONIUM, TITANIUM, VANADIUM, CHROMIUM, MOLYBDEUM, MAGANESE, TUNGSTEN, IRON, COBALT, NICKEL, PALLADIUM AND COPPER.
Claim 2
Dependent Claim
160 words
THE PROCESS FOR THE CATALYTIC DEHYDROGENATION OF A FIRST HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF PARAFFINS AND OLEFINS TO A CORRESPONDING LESS SATURATED SECOND HYDROCARBON, CONSISTING ESSENTIALLY OF REACTING SAID FIRST HYDROCARBON, IN THE VAPOR PHASE, AT A TEMPERATURE OF FROM ABOUT 375* TO ABOUT 1000*C., WITH A HALOGEN SELECTED FROM THE GROUP CONSISTING OF BROMINE AND IODINE, IN A MOLE RATIO OF SAID HALOGEN TO SAID FIRST HYDROCARBON IN THE RANGE OF FROM ABOUT 0.001:1 TO ABOUT 0.09:1, IN THE PRESENCE OF ADDED FREE OXYGEN, AND OF A SOLID CATALYST CONSISTING ESSENTIALLY OF AN ALKALI METAL HALIDE IN COMBINATION WITH FROM ABOUT 1 TO ABOUT 7 MOLES OF SILVER HALIDE, AND IN THE ADDITIONAL PRESENCE OF FROM ABOUT 1 TO ABOUT 7 MOLES PER MOL OF SAID ALKALI METAL HALIDE OF AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF THE OXIDES AND HALIDES OF ZIRCONIUM, TITANIUM, VANADIUM, CHROMIUM, MOLYBDEUM, MAGANESE, TUNGSTEN, IRON, COBALT, NICKEL, PALLADIUM AND COPPER.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |