US3303231A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molecular sieve separation processes
Assignee: BP PLC
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Filing: 1964-04-15
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Granted: 1967-02-07
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Expires: 1984-04-15
Abstract
No abstract record available.
Inventors
- 👤 Hicks Clive Leonard
- 👤 Macnab Robert Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:07
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR THE PRODUCTION OF N-PARAFFIN FRACTIONS HAVING A PURITY OF AT LEAST 99% BY WEIGHT COMPRISING CONTACTING A PETROLEUM FRACTION BOILING IN THE C10-C20 RANGE WITH A 5 A. MOLECULAR SIEVE AT A TEMPERATURE IN THE RANGE 300-450*C. AND A PRESSURE OF 0-300 P.S.I.G. TO PRODUCE AN INTERMEDIATE PRODUCT CONTAINING AT LEAST 95%, BY WEIGHT, OF N-PARAFFINS, SUBJECTING THE INTERMEDIATE PRODUCT TO A DEAROMATIZATION OPERATION, CONTACTING THE DEAROMATIZED INTERMEDIATE PRODUCT WITH A 5 A. MOLECULAR SIEVE AT A TEMPERATURE IN THE RANGE 300450*C. AND AT A PRESSURE OF 0-300 P.S.I.G. TO PRODUCE A FRACTION CONTAINING LESS THAN 1.0% BY WEIGHT OF ISOPARAFFINS AND NAPHTHENES, AND RECOVERING A N-PARAFFIN PRODUCT THEREFROM HAVING A PURITY OF AT LEAST 99%.
Claim 2
Dependent Claim
119 words
A PROCESS FOR THE PRODUCTION OF N-PARAFFIN FRACTIONS HAVING A PURITY OF AT LEAST 99% BY WEIGHT COMPRISING CONTACTING A PETROLEUM FRACTION BOILING IN THE C10-C20 RANGE WITH A 5 A. MOLECULAR SIEVE AT A TEMPERATURE IN THE RANGE 300-450*C. AND A PRESSURE OF 0-300 P.S.I.G. TO PRODUCE AN INTERMEDIATE PRODUCT CONTAINING AT LEAST 95%, BY WEIGHT, OF N-PARAFFINS, SUBJECTING THE INTERMEDIATE PRODUCT TO A DEAROMATIZATION OPERATION, CONTACTING THE DEAROMATIZED INTERMEDIATE PRODUCT WITH A 5 A. MOLECULAR SIEVE AT A TEMPERATURE IN THE RANGE 300450*C. AND AT A PRESSURE OF 0-300 P.S.I.G. TO PRODUCE A FRACTION CONTAINING LESS THAN 1.0% BY WEIGHT OF ISOPARAFFINS AND NAPHTHENES, AND RECOVERING A N-PARAFFIN PRODUCT THEREFROM HAVING A PURITY OF AT LEAST 99%.
References Cited (Backward Citations)
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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) | 1970-02-06 | 1970-08-08 | 1971-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-06 | 1974-08-08 | 1975-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-06 | 1978-08-08 | 1979-02-07 | $7700.00 | Window Closed / Lapsed |