Patent US3260667A successfully refreshed from Google Patents.
US3260667A
Expired / Lapsed
US
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Separation processes using molecular sieves
Assignee: BP PLC
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Filing: 1963-06-13
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Granted: 1966-07-12
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Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 Yeo Alan Arthur
- 👤 Mowell Roger Templeton Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:54
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR SEPARATING WITH A HIGH RECOVERY YIELD OF STRAIGHT-CHAIN HYDROCARBONS FROM PETROLEUM FRACTIONS BOILING IN THE C10-C20 RANGE AND CONTAINING MOLECULAR SIEVE DEACTIVATING HYDROCARBONS COMPRISING FRACTIONATING AT A TEMPERATURE WITHIN THE RANGE 220-300*C. THE FEEDSTOCK TO OBTAIN A LOWER-BOILING FRACTION SUBSTANTIALLY FREE OF DEACTIVATING HYDROCARBONS AND AT LEAST ONE HIGHERBOILING FRACTION CONTAINING DEACTIVATING HYDROCARBONS AND TREATING EACH FRACTION SUCCESSIVELY, IN ASCENDING ORDER OF BOILING RANGE, WITH 5 A. MOLECULAR SIEVE TO EXTRACT STRAIGHT-CHAIN HYDROCARBONS.
Claim 2
Dependent Claim
76 words
A PROCESS FOR SEPARATING WITH A HIGH RECOVERY YIELD OF STRAIGHT-CHAIN HYDROCARBONS FROM PETROLEUM FRACTIONS BOILING IN THE C10-C20 RANGE AND CONTAINING MOLECULAR SIEVE DEACTIVATING HYDROCARBONS COMPRISING FRACTIONATING AT A TEMPERATURE WITHIN THE RANGE 220-300*C. THE FEEDSTOCK TO OBTAIN A LOWER-BOILING FRACTION SUBSTANTIALLY FREE OF DEACTIVATING HYDROCARBONS AND AT LEAST ONE HIGHERBOILING FRACTION CONTAINING DEACTIVATING HYDROCARBONS AND TREATING EACH FRACTION SUCCESSIVELY, IN ASCENDING ORDER OF BOILING RANGE, WITH 5 A. MOLECULAR SIEVE TO EXTRACT STRAIGHT-CHAIN HYDROCARBONS.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |