Patent US2849504A successfully refreshed from Google Patents.
US2849504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclization of aliphatic hydrocarbons
Assignee: MW Kellogg Co
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Filing: 1954-02-10
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Granted: 1958-08-26
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Expires: 1974-02-10
Abstract
No abstract record available.
Inventors
- 👤 Chia-Chen C Kang
- 👤 John M Mccrea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:42
CPC Classifications
C; C10; C10G; C10G59/00; C10G59/02; C07; C07C; C07C5/00; C07C5/32; C07C5/373; C07C2601/00; C07C2601/06; C07C2601/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS WHICH COMPRISES SUBJECTING A NAPHTHA FRACTION CONTAINING A STRAIGHT CHAIN HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF A C5 HYDROCARBON, A C6 HYDROCARBON AND MIXTURES THEREOF TO A SEPARATION TREATMENT WHEREBY A STRAIGHT CHAIN HYDROCARBON IUS REMOVED THEREFROM, CONTACTING AT LEAST THE REMAINDER OF THE NAPHTHA FRACTION WITH A PLATINUM CATALYST UNDER SUITABLE REFORMING CONDITIONS IN A REFORMING ZONE TO PRODUCE A HIGH OCTANE QUALITY GASOLINE MATERIAL, TREATING A CATALYST COMPRISING ABOUT 5 TO ABOUT 25% BY WEIGHT OF PLATINUM WITH A HYDROGEN CONTAINING GAS, CONTACTING THE STRAIGHT CHAIN SATURATED HYDROCARBON WITH THE TREATED PLATINUM CATALYST AT A TEMPERATURE OF ABOUT 250* TO ABOUT 420*C., A PRESSURE OF ABOUT 1 TO ABOUT 70 P. S. I. G., AND A WEIGHT SPACE VELOCITY OF ABOUT 0.001 TO ABOUT 2 THEREBY PRODUCING A CYCLOPENTANE COMPOUND, AND COMBINING THE CYCLOPENATE COMPOUND WITH THE REMAINDER OF THE NAPHTHA FRACTION.
Claim 2
Dependent Claim
147 words
A PROCESS WHICH COMPRISES SUBJECTING A NAPHTHA FRACTION CONTAINING A STRAIGHT CHAIN HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF A C5 HYDROCARBON, A C6 HYDROCARBON AND MIXTURES THEREOF TO A SEPARATION TREATMENT WHEREBY A STRAIGHT CHAIN HYDROCARBON IUS REMOVED THEREFROM, CONTACTING AT LEAST THE REMAINDER OF THE NAPHTHA FRACTION WITH A PLATINUM CATALYST UNDER SUITABLE REFORMING CONDITIONS IN A REFORMING ZONE TO PRODUCE A HIGH OCTANE QUALITY GASOLINE MATERIAL, TREATING A CATALYST COMPRISING ABOUT 5 TO ABOUT 25% BY WEIGHT OF PLATINUM WITH A HYDROGEN CONTAINING GAS, CONTACTING THE STRAIGHT CHAIN SATURATED HYDROCARBON WITH THE TREATED PLATINUM CATALYST AT A TEMPERATURE OF ABOUT 250* TO ABOUT 420*C., A PRESSURE OF ABOUT 1 TO ABOUT 70 P. S. I. G., AND A WEIGHT SPACE VELOCITY OF ABOUT 0.001 TO ABOUT 2 THEREBY PRODUCING A CYCLOPENTANE COMPOUND, AND COMBINING THE CYCLOPENATE COMPOUND WITH THE REMAINDER OF THE NAPHTHA FRACTION.
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |