US2785209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing aromatic hydrocarbons
Assignee: Hoechst AG
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Filing: 1954-08-24
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Granted: 1957-03-12
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Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Schmetterling Arie
- 👤 Krekeler Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:29
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/412
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR PREPARING AROMATIC HYDROCARBON WHICH COMPRISES HEATING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,4,4-TRIMETHYLPENTENE-(1), 2,4,4-TRIMETHYLPENTENE-(2), MIXTURES OF THESE COMPOUNDS AND MIXTURES OF THESE COMPOUDS WITH 2,4,4-TRIMETHYLPENTANE AT ELEVATED TEMPERATURES IN THE PRESENCE OF SAID OXIDIC CYCLIZATION CATALYST COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF METAL OXIDES OF CHROMIUM, MOLYBDENUM AND TUNGSTEN AND MIXTURES THEREOF.
Claim 2
Dependent Claim
60 words
A PROCESS FOR PREPARING AROMATIC HYDROCARBON WHICH COMPRISES HEATING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2,4,4-TRIMETHYLPENTENE-(1), 2,4,4-TRIMETHYLPENTENE-(2), MIXTURES OF THESE COMPOUNDS AND MIXTURES OF THESE COMPOUDS WITH 2,4,4-TRIMETHYLPENTANE AT ELEVATED TEMPERATURES IN THE PRESENCE OF SAID OXIDIC CYCLIZATION CATALYST COMPRISING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF METAL OXIDES OF CHROMIUM, MOLYBDENUM AND TUNGSTEN AND MIXTURES THEREOF.
References Cited (Backward Citations)
US2317683A
Cited
US2337190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-11 | 1960-09-10 | 1961-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-11 | 1964-09-10 | 1965-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-11 | 1968-09-10 | 1969-03-12 | $7700.00 | Window Closed / Lapsed |