US2745887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dehydrogenation of non-aromatic cyclic compounds
Assignee: Universal Oil Products Co
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Filing: 1953-06-15
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Granted: 1956-05-15
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Expires: 1973-06-15
Abstract
No abstract record available.
Inventors
- 👤 Pines Herman
- 👤 Jerome A Vesely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:42
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/367
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
83 words
A PROCESS FOR THE DEHYDROGENATION OF A NON-AROMATIC CYCLIC HYDROCARBON CONTAINING A SIX CARBON ATOM RING AND AT LEAST TWO DOUBLE BONDS PER MOLECULE, AT LEAST ONE OF SAID DOUBLE BONDS BEING IN SAID RING, TO FORM AN AROMATIC COMPOUND WHICH COMPRISES THE STEP OF HEATING SAID NONAROMATIC CYCLIC HYDROCARBON AT A DEHYDROGENATING TEMPERATURE OF FROM ABOUT 100* C. TO ABOUT 400* C. IN CONTACT WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH METALS AND HYDRIDES THEREOF.
Claim 2
Dependent Claim
83 words
A PROCESS FOR THE DEHYDROGENATION OF A NON-AROMATIC CYCLIC HYDROCARBON CONTAINING A SIX CARBON ATOM RING AND AT LEAST TWO DOUBLE BONDS PER MOLECULE, AT LEAST ONE OF SAID DOUBLE BONDS BEING IN SAID RING, TO FORM AN AROMATIC COMPOUND WHICH COMPRISES THE STEP OF HEATING SAID NONAROMATIC CYCLIC HYDROCARBON AT A DEHYDROGENATING TEMPERATURE OF FROM ABOUT 100* C. TO ABOUT 400* C. IN CONTACT WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF THE ALKALI AND ALKALINE EARTH METALS AND HYDRIDES THEREOF.
Claim 3
Dependent Claim
78 words
A PROCESS FOR THE DEHYDROGENATION OF A NON-AROMATIC CYCLIC HYDROCARBON CONTAINING A SIX CARBON ATOM RING AND AT LEAST TWO DOUBLE BONDS PER MOLECULE, AT LEAST ONE OF SAID DOUBLE BONDS BEING IN SAID RING, AND AT LEAST ONE HYDROGEN ATOM ON THE CARBON ATOMS OF THE RING WHICH DO NOT CONTAIN A DOUBLE BOND WHICH COMPRISES HEATING SAID NON-AROMATIC CYCLIC HYDROCARBON WITH AN ALKALI METAL CATALYST AT A TEMPERATURE OF FROM ABOUT 160* C. TO 300* C.
Claim 4
Dependent Claim
78 words
A PROCESS FOR THE DEHYDROGENATION OF A NON-AROMATIC CYCLIC HYDROCARBON CONTAINING A SIX CARBON ATOM RING AND AT LEAST TWO DOUBLE BONDS PER MOLECULE, AT LEAST ONE OF SAID DOUBLE BONDS BEING IN SAID RING, AND AT LEAST ONE HYDROGEN ATOM ON THE CARBON ATOMS OF THE RING WHICH DO NOT CONTAIN A DOUBLE BOND WHICH COMPRISES HEATING SAID NON-AROMATIC CYCLIC HYDROCARBON WITH AN ALKALI METAL CATALYST AT A TEMPERATURE OF FROM ABOUT 160* C. TO 300* C.
Claim 5
Dependent Claim
35 words
A PROCESS FOR THE DEHYDROGENATION OF D-LIMONENE TO FORM P-CYMENE WHICH COMPRISES THE STEP OF HEATING SAID LIMONENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND HYDRIDES THEREOF, UNDER DEHYDROGENATING CONDITIONS.
Claim 6
Dependent Claim
35 words
A PROCESS FOR THE DEHYDROGENATION OF D-LIMONENE TO FORM P-CYMENE WHICH COMPRISES THE STEP OF HEATING SAID LIMONENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND HYDRIDES THEREOF, UNDER DEHYDROGENATING CONDITIONS.
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) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |