Patent US2861944A successfully refreshed from Google Patents.
US2861944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conversion of methylcyclopentane to benzene
Assignee: Standard Oil Co
•
Filing: 1955-06-29
•
Granted: 1958-11-25
•
Expires: 1975-06-29
Abstract
No abstract record available.
Inventors
- 👤 John R Coley
- 👤 Bernard L Evering
- 👤 John D Mccollum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:28
CPC Classifications
C; C10; C10G; C10G35/00; C10G35/04; C10G35/06; C10G35/085
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
THE METHOD OF CONVERTING METHYLCYCLOPENTANE IN A NAPHTHA CHARGING STOCK, WHICH METHOD COMPRISES FRACTIONATING SAID NAPHTHA TO OBTAIN A LIGHT NAPHTHA BOILING WITHIN THE RANGE OF 140 TO 200*F. AND CONTAINING AT LEAST ABOUT 5 PERCENT OF METHYLCYCLOPENTANE, HYDROFORMING SAID LIGHT NAPHTHA WITH A SUPPORTED PLATINUM CATALYST AT A PRESSURE ABOVE ABOUT 50 BUT BELOW 150 P.S.I. AND AT A TEMPERATURE IN THE RANGE OF ABOUT 900 TO 950*F. IN THE PRESENCE OF ABOUT 1 TO 10 MOLS OF HYDROGEN PER MOL OF CHARGE AND ALSO IN THE PRESENCE OF ABOT 100 TO 500 PARTS PER MILLION OF SULFUR BASED ON HYDROCARBON CHARGE WHEREBY THE PRESENCE OF THE SULFUR INCREASES BENZENE PRODUCTION AND DECREASES HYDROCRACKING WITHOUT SUBSTANTIAL ADVERSE EFFECT ON CATALYST ACTIVITY AND SELECTIVITY.
Claim 2
Independent Claim
124 words
THE METHOD OF CONVERTING METHYLCYCLOPENTANE IN A NAPHTHA CHARGING STOCK, WHICH METHOD COMPRISES FRACTIONATING SAID NAPHTHA TO OBTAIN A LIGHT NAPHTHA BOILING WITHIN THE RANGE OF 140 TO 200*F. AND CONTAINING AT LEAST ABOUT 5 PERCENT OF METHYLCYCLOPENTANE, HYDROFORMING SAID LIGHT NAPHTHA WITH A SUPPORTED PLATINUM CATALYST AT A PRESSURE ABOVE ABOUT 50 BUT BELOW 150 P.S.I. AND AT A TEMPERATURE IN THE RANGE OF ABOUT 900 TO 950*F. IN THE PRESENCE OF ABOUT 1 TO 10 MOLS OF HYDROGEN PER MOL OF CHARGE AND ALSO IN THE PRESENCE OF ABOT 100 TO 500 PARTS PER MILLION OF SULFUR BASED ON HYDROCARBON CHARGE WHEREBY THE PRESENCE OF THE SULFUR INCREASES BENZENE PRODUCTION AND DECREASES HYDROCRACKING WITHOUT SUBSTANTIAL ADVERSE EFFECT ON CATALYST ACTIVITY AND SELECTIVITY.
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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |