Patent US3231631A successfully refreshed from Google Patents.
US3231631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separation process
Assignee: BP PLC
•
Filing: 1963-01-21
•
Granted: 1966-01-25
•
Expires: 1983-01-21
Abstract
No abstract record available.
Inventors
- 👤 Hicks Clive Leonard
- 👤 Mowll Roger Templeton Lewis
- 👤 Anstey Roger Hilary
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:19
CPC Classifications
C; C10; C10G; C10G25/00; C10G25/02; C10G25/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR THE RECOVERY OF STRAIGHT CHAIN HYDROCARBONS FROM MIXTURES OF THE SAME WITH BRANCHED CHAIN AND CYCLIC HYDROCARBONS COMPRISING CONTACTING THE MIXTURE WITH A 5 A. MOLECULAR SEIVE AT A FEED RATE WITHIN THE RANGE 0.5 TO 0.8 LHSV AND ADJUSTING THE FEED RATE WITHIN SAID RANGE SO THAT THE ABSORPTION PROCEEDS WITH AN EXTRACTION EFFICIENCY OF BETWEEN 70 TO 90%, AND SUBSEQUENTLY DESORB ING THE STRAIGHT CHAIN HYDROCARBONS FROM THE SEIVE.
Claim 2
Dependent Claim
74 words
A PROCESS FOR THE RECOVERY OF STRAIGHT CHAIN HYDROCARBONS FROM MIXTURES OF THE SAME WITH BRANCHED CHAIN AND CYCLIC HYDROCARBONS COMPRISING CONTACTING THE MIXTURE WITH A 5 A. MOLECULAR SEIVE AT A FEED RATE WITHIN THE RANGE 0.5 TO 0.8 LHSV AND ADJUSTING THE FEED RATE WITHIN SAID RANGE SO THAT THE ABSORPTION PROCEEDS WITH AN EXTRACTION EFFICIENCY OF BETWEEN 70 TO 90%, AND SUBSEQUENTLY DESORB ING THE STRAIGHT CHAIN HYDROCARBONS FROM THE SEIVE.
References Cited (Backward Citations)
US2859256A
Cited
US3081255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-24 | 1969-07-26 | 1970-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-24 | 1973-07-26 | 1974-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-24 | 1977-07-26 | 1978-01-25 | $7700.00 | Window Closed / Lapsed |