US3009969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selective hydrogenation of conjugated diolefines to monoolefines
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1959-12-14
•
Granted: 1961-11-21
•
Expires: 1979-12-14
Abstract
No abstract record available.
Inventors
- 👤 Spencer Michael Staines
- 👤 Dowden Dennis Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:04
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/24; B01J27/26; C; C07; C07C; C07C5/00; C07C5/02; C07C5/03; C07C5/05; C07C2527/00; C07C2527/24; C07C2527/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR THE HYDROGENATION OF CONJUGATED DIOLEFINES TO MONO-OLEFINES WITHOUT THE FORMATION OF UNDESIRABLE QUANTITIES OF FURTHER HYDROGENATION PRODUCTS, WHICH COMPRISES THE STEP OF CONTACTING A CATALYST SOLUTION PREPARED BY MIXING AN AQUEOUS SOLUTION OF A SOLUBLE SALT OF DIVALENT COBALT WITH A SOLUTION OF AN ALKALI METAL CYANIDE WITH A CONJUGATED DI-OLEFINE IN THE PRESENCE OF HYDROGEN.
Claim 2
Dependent Claim
59 words
A PROCESS FOR THE HYDROGENATION OF CONJUGATED DIOLEFINES TO MONO-OLEFINES WITHOUT THE FORMATION OF UNDESIRABLE QUANTITIES OF FURTHER HYDROGENATION PRODUCTS, WHICH COMPRISES THE STEP OF CONTACTING A CATALYST SOLUTION PREPARED BY MIXING AN AQUEOUS SOLUTION OF A SOLUBLE SALT OF DIVALENT COBALT WITH A SOLUTION OF AN ALKALI METAL CYANIDE WITH A CONJUGATED DI-OLEFINE IN THE PRESENCE OF HYDROGEN.
References Cited (Backward Citations)
US2207071A
Cited
US2900429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-20 | 1965-05-22 | 1965-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-20 | 1969-05-22 | 1969-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-20 | 1973-05-22 | 1973-11-21 | $7700.00 | Window Closed / Lapsed |