Patent US2754339A successfully refreshed from Google Patents.
US2754339A
Expired / Lapsed
US
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Dehydrogenation of aromatic bicyclic compounds
Assignee: Universal Oil Products Co
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Filing: 1953-12-28
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Granted: 1956-07-10
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Expires: 1973-12-28
Abstract
No abstract record available.
Inventors
- 👤 Pines Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:36
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/387; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/94
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
61 words
A PROCESS FOR DEHYDROGENATING AN UNSATURATED BICYCLIC TERPENE CONTAINING A 6-MEMBERED CARBON ATOM RING AND A RING SELECTED FROM THE GROUP CONSISTING OF 3 AND 4MEMBERED CARBON ATOM RINGS WHICH COMPRISES CONTACTING SAID BICYCLIC TERPENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND THEIR HYDRIDES IN THE PRESENCE OF A POLYNUCLEAR AROMATIC HYDROCARBON TO FORM AROMATIC COMPOUNDS.
Claim 2
Dependent Claim
61 words
A PROCESS FOR DEHYDROGENATING AN UNSATURATED BICYCLIC TERPENE CONTAINING A 6-MEMBERED CARBON ATOM RING AND A RING SELECTED FROM THE GROUP CONSISTING OF 3 AND 4MEMBERED CARBON ATOM RINGS WHICH COMPRISES CONTACTING SAID BICYCLIC TERPENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND THEIR HYDRIDES IN THE PRESENCE OF A POLYNUCLEAR AROMATIC HYDROCARBON TO FORM AROMATIC COMPOUNDS.
Claim 3
Dependent Claim
55 words
A PROCESS FOR DEYHDROGENATING A-PINENE WHICH COMPRISES CONTACTING SAID PINENE WITH A CATALYST CONSISTING OF SODIUM AND O-CHLOROTOLUENE, AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 150* C. TO ABOUT 275* C. AND AT A PRESSURE IN THE RANGE OF FROM ABOUT ATMOSPHERIC TO ABOUT 25 ATMOSPHERES OF NITROGEN, TO FORM P-CYMENE AND 1,2,3-TIMETHYLBENZENE.
Claim 4
Dependent Claim
55 words
A PROCESS FOR DEYHDROGENATING A-PINENE WHICH COMPRISES CONTACTING SAID PINENE WITH A CATALYST CONSISTING OF SODIUM AND O-CHLOROTOLUENE, AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 150* C. TO ABOUT 275* C. AND AT A PRESSURE IN THE RANGE OF FROM ABOUT ATMOSPHERIC TO ABOUT 25 ATMOSPHERES OF NITROGEN, TO FORM P-CYMENE AND 1,2,3-TIMETHYLBENZENE.
Claim 5
Dependent Claim
64 words
A PROCESS FOR DEHYDROGENATING AN UNSATURATED BICYCLIC TERPENE CONTAINING A 6-MEMBERED CARBON ATOM RING AND A RING HAVING AT LEAST 3 BUT NOT MORE THAN 4 CARBON ATOMS, WHICH COMPRISES CONTACTING SAID TERPENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND THEIR HYDRIDES IN THE PRESENCE OF AN ORGANIC PROMOTER COMPOUND CAPABLE OF FORMING AN ORGANOMETALLIC COMPOUND WITH SAID CATALYST.
Claim 6
Dependent Claim
64 words
A PROCESS FOR DEHYDROGENATING AN UNSATURATED BICYCLIC TERPENE CONTAINING A 6-MEMBERED CARBON ATOM RING AND A RING HAVING AT LEAST 3 BUT NOT MORE THAN 4 CARBON ATOMS, WHICH COMPRISES CONTACTING SAID TERPENE WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF ALKALI METALS AND THEIR HYDRIDES IN THE PRESENCE OF AN ORGANIC PROMOTER COMPOUND CAPABLE OF FORMING AN ORGANOMETALLIC COMPOUND WITH SAID CATALYST.
References Cited (Backward Citations)
US1968208A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-10 | 1960-01-09 | 1960-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-10 | 1964-01-09 | 1964-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-10 | 1968-01-09 | 1968-07-10 | $7700.00 | Window Closed / Lapsed |