Patent US4553208A successfully refreshed from Google Patents.
US3215751A
Expired / Lapsed
US
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Isomerisation of olefins
Assignee: BP PLC
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Filing: 1962-07-27
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Granted: 1965-11-02
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Expires: 1982-07-27
Abstract
No abstract record available.
Inventors
- 👤 Bourne Kenneth Hugh
- 👤 Holmes Peter Desmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:16
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/2556; B; B01; B01J; B01J23/00; B01J23/70; B01J23/74; B01J23/755; C07C5/02; C07C5/03; C07C5/05; C07C5/13; B01J37/00; B01J37/02; B01J37/0201; C07C2523/00; C07C2523/70; C07C2523/74; C07C2523/755
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
A PROCESS FOR THE ISOMERISATION OF A MONO-OLEFINIC HYDROCARBON BY DOUBLE BOND MIGRATION WHICH COMPRISES PASSING SAID HYDROCARBON OVER A SUPPORTED CATALYST AT A TEMPERATURE BETWEEN ABOUT 50* AND 250*C., SAID CATALYST CONTAINING NICKEL WHICH, IN SAID TEMPERATURE RANGE, IS PRESENT IN MAJOR PROPORTION AS ELEMENTAL NICKEL, SAID CATALYST HAVING BEEN PREVIOUSLY MODIFIED BY TREATMENT WITH AT LEAST ONE SULPHUR-CONTAINING MATERIAL SELECTED FROM THE GROUP CONSISTING OF THIOPHENES, THIACYCLOALKANES HAVING AT LEAST 4 CARBON ATOMS PER RING AND DIALKYLMONOSULPHIDES, AT A TEMPERATURE IN THE RANGE OF 0-200*C., SAID TREATMENT BEING CARRIED OUT SUCH THAT SULPHUR IS COMBINED WITH THE ELEMENTAL NICKEL IN AN AMOUNT BETWEEN 1AND 40 MOL PERCENT OF SULPHUR BASED ON THE TOTAL ELEMENTAL NICKEL IN SAID ELEMENTAL NICKEL-CONTAINING CATALYTIC MATERIAL PRIOR TO SAID TREATMENT WITH SAID AT LEAST ONE SULPHUR-CONTAINING MATERIAL.
Claim 2
Dependent Claim
134 words
A PROCESS FOR THE ISOMERISATION OF A MONO-OLEFINIC HYDROCARBON BY DOUBLE BOND MIGRATION WHICH COMPRISES PASSING SAID HYDROCARBON OVER A SUPPORTED CATALYST AT A TEMPERATURE BETWEEN ABOUT 50* AND 250*C., SAID CATALYST CONTAINING NICKEL WHICH, IN SAID TEMPERATURE RANGE, IS PRESENT IN MAJOR PROPORTION AS ELEMENTAL NICKEL, SAID CATALYST HAVING BEEN PREVIOUSLY MODIFIED BY TREATMENT WITH AT LEAST ONE SULPHUR-CONTAINING MATERIAL SELECTED FROM THE GROUP CONSISTING OF THIOPHENES, THIACYCLOALKANES HAVING AT LEAST 4 CARBON ATOMS PER RING AND DIALKYLMONOSULPHIDES, AT A TEMPERATURE IN THE RANGE OF 0-200*C., SAID TREATMENT BEING CARRIED OUT SUCH THAT SULPHUR IS COMBINED WITH THE ELEMENTAL NICKEL IN AN AMOUNT BETWEEN 1AND 40 MOL PERCENT OF SULPHUR BASED ON THE TOTAL ELEMENTAL NICKEL IN SAID ELEMENTAL NICKEL-CONTAINING CATALYTIC MATERIAL PRIOR TO SAID TREATMENT WITH SAID AT LEAST ONE SULPHUR-CONTAINING MATERIAL.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |