Patent US3070637A successfully refreshed from Google Patents.
US3070637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of benzene and toluene
Assignee: Sunoco Inc
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Filing: 1959-08-03
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Granted: 1962-12-25
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Expires: 1979-08-03
Abstract
No abstract record available.
Inventors
- 👤 Earl M Honeycutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:11
CPC Classifications
C; C10; C10G; C10G61/00; C10G61/02; C10G61/06; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
METHOD OF PREPARING BENZENE AND TOLUENE WHICH COMPRISES REFORMING A MIXTURE OF STRAIGHT RUN NAPHTHA BOILING IN THE RANGE OF 150-220*F. WITH HEREINAFTER SPECIFIED RECYCLE FRACTION IN THE PREESENCE OF A PLATINUM-CONTAINING REFORMING CATALYST, SAID REFORMING BEING CARRIED OUT IN THE PRESENCE OF HYDROGEN AT A PRESSURE OF 220-600 P.S.I.G., A MOLAR RATIO OF HYDROGEN TO HYDROCARBON IN THE RANGE OF 2:1 TO 5:1 AND A TEMPERATURE OF 875-975*F., SEPARATING GASEOUS COMPONENTS FROM THE REFORMATE, DIRECTLY EXTRACTING THE REFORMATE TO SEPARATE A BENZENETOLUENE EXTRACT FROM SATURATED HYDROCARBON RAFFINATE CONTAINING UNCONVERTED METHYLCYCLOPENTANE, DISTILLING THE RAFFINATE TO SEPARATE A METHYLCYCLOPENTANE-RICH FRACTION BOILING IN THE RANGE OF 150-170*F. FROM LOWER AND HIGHER BOILING HYDROCARBONS, AND RECYCLING ALL SAID METHYLCYCLOPENTANE-RICH FRACTIONS AS THE SAID RECYCLE FRACTION.
Claim 2
Dependent Claim
122 words
METHOD OF PREPARING BENZENE AND TOLUENE WHICH COMPRISES REFORMING A MIXTURE OF STRAIGHT RUN NAPHTHA BOILING IN THE RANGE OF 150-220*F. WITH HEREINAFTER SPECIFIED RECYCLE FRACTION IN THE PREESENCE OF A PLATINUM-CONTAINING REFORMING CATALYST, SAID REFORMING BEING CARRIED OUT IN THE PRESENCE OF HYDROGEN AT A PRESSURE OF 220-600 P.S.I.G., A MOLAR RATIO OF HYDROGEN TO HYDROCARBON IN THE RANGE OF 2:1 TO 5:1 AND A TEMPERATURE OF 875-975*F., SEPARATING GASEOUS COMPONENTS FROM THE REFORMATE, DIRECTLY EXTRACTING THE REFORMATE TO SEPARATE A BENZENETOLUENE EXTRACT FROM SATURATED HYDROCARBON RAFFINATE CONTAINING UNCONVERTED METHYLCYCLOPENTANE, DISTILLING THE RAFFINATE TO SEPARATE A METHYLCYCLOPENTANE-RICH FRACTION BOILING IN THE RANGE OF 150-170*F. FROM LOWER AND HIGHER BOILING HYDROCARBONS, AND RECYCLING ALL SAID METHYLCYCLOPENTANE-RICH FRACTIONS AS THE SAID RECYCLE FRACTION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-24 | 1966-06-25 | 1966-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-24 | 1970-06-25 | 1970-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-24 | 1974-06-25 | 1974-12-25 | $7700.00 | Window Closed / Lapsed |