US3240832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for converting c6 and higher aliphatic hydrocarbons to aromatics using as catalyst a free alkali metal on a carrier
Assignee: Sinclair Research Inc
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Filing: 1962-08-13
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Granted: 1966-03-15
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Patrick W Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:00
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C5/393; C07C5/41; C07C5/415
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A METHOD FOR THE CONVERSION OF C6 PLUS ALIPHATIC HYDROCARBONS TO AROMATICS WHICH COMPRISES CONTACTING A FEEDSTOCK SELECTED FROM THE GROUP CONSISTING OF PARAFFINS AND MONOOLEFINS HAVING A STRAIGHT CARBON CHAIN LENGTH OF AT LEAST SIX CARBON ATOMS UNDER DEHYDROCYCLIZATION CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF CATALYTICALLY EFFECTIVE AMOUNTS OF A FREE ALKALI METAL ON A SOLID, ACIDIC CATALYST SUPPORT SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINA, AND MIXTURES THEREOF CONTAINING SUFFICIENT ALKALI METAL IONS, TO PROVIDE A NON-ACIDIC SUPPORT.
Claim 2
Independent Claim
82 words
A METHOD FOR THE CONVERSION OF C6 PLUS ALIPHATIC HYDROCARBONS TO AROMATICS WHICH COMPRISES CONTACTING A FEEDSTOCK SELECTED FROM THE GROUP CONSISTING OF PARAFFINS AND MONOOLEFINS HAVING A STRAIGHT CARBON CHAIN LENGTH OF AT LEAST SIX CARBON ATOMS UNDER DEHYDROCYCLIZATION CONDITIONS WITH A CATALYST CONSISTING ESSENTIALLY OF CATALYTICALLY EFFECTIVE AMOUNTS OF A FREE ALKALI METAL ON A SOLID, ACIDIC CATALYST SUPPORT SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINA, AND MIXTURES THEREOF CONTAINING SUFFICIENT ALKALI METAL IONS, TO PROVIDE A NON-ACIDIC SUPPORT.
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) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |