US3272887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of olefins using sepiolite catalyst
Assignee: BP PLC
•
Filing: 1963-10-15
•
Granted: 1966-09-13
•
Expires: 1983-10-15
Abstract
No abstract record available.
Inventors
- 👤 Pitkethly Robert Chalmers
- 👤 Ford John Frederick
- 👤 Fisher Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:30
CPC Classifications
B; B01; B01J; B01J21/00; C; C07; C07C; C07C5/00; C07C5/22; C07C5/2206; C07C5/2226; C07C5/23; C07C5/25; C07C5/2506; C07C2521/00; C07C2521/06; C07C2521/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
A PROCESS FOR THE ISOMERIZATION OF A MONO-OLEFIN HAVING BETWEEN 4 AND 6 CARBON ATOMS PER MOLECULE, WHICH IS CAPABLE OF UNDERGOING DOUBLE BOND SHIFT, WHICH PROCESS COMPRISING ISOMERISING THE OLEFIN IN CONTACT WITH A SEPIOLITE CATALYST AT BETWEEN 50* AND 500*C.
Claim 2
Dependent Claim
42 words
A PROCESS FOR THE ISOMERIZATION OF A MONO-OLEFIN HAVING BETWEEN 4 AND 6 CARBON ATOMS PER MOLECULE, WHICH IS CAPABLE OF UNDERGOING DOUBLE BOND SHIFT, WHICH PROCESS COMPRISING ISOMERISING THE OLEFIN IN CONTACT WITH A SEPIOLITE CATALYST AT BETWEEN 50* AND 500*C.
References Cited (Backward Citations)
US2331338A
Cited
US2346657A
Cited
US2313053A
Cited
US2357741A
Cited
US2390556A
Cited
US2431481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-12 | 1970-03-14 | 1970-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-12 | 1974-03-14 | 1974-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-12 | 1978-03-14 | 1978-09-13 | $7700.00 | Window Closed / Lapsed |