Patent US2741631A successfully refreshed from Google Patents.
US2741631A
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Catalytic reaction of acetylene with vinylidene or vinylene compounds
Assignee: EIDP Inc
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Filing: 1954-02-01
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Granted: 1956-04-10
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Expires: 1974-02-01
Abstract
No abstract record available.
Inventors
- 👤 John C Sauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:03
CPC Classifications
C; C07; C07C; C07C255/00; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/69; C07C45/72; C07C45/73; C07C47/00; C07C47/20; C07C47/21; C07C49/00; C07C49/20; C07C49/203; C07C51/00; C07C51/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
PROCESS FOR PREPARING MONOENES WHICH COMPRISES HEATING AND REACTING ACETYLENE WITH A COMPOUND SELECTED FROM THE CLASS CONSISTING OF VINYLIDENE AND VINYLENE COMPOUNDS IN THE PRESENCE OF A CATALYST COMPRISING A COMPLEX OF AN ALIPHATIC DIAMINE WITH A HEAVY METAL SALT OF A WEAK ACID, SAID VINYLIDENE AND VINYLENE COMPOUNDS HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
54 words
PROCESS FOR PREPARING MONOENES WHICH COMPRISES HEATING AND REACTING ACETYLENE WITH A COMPOUND SELECTED FROM THE CLASS CONSISTING OF VINYLIDENE AND VINYLENE COMPOUNDS IN THE PRESENCE OF A CATALYST COMPRISING A COMPLEX OF AN ALIPHATIC DIAMINE WITH A HEAVY METAL SALT OF A WEAK ACID, SAID VINYLIDENE AND VINYLENE COMPOUNDS HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2540736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-10 | 1959-10-10 | 1960-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-10 | 1963-10-10 | 1964-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-10 | 1967-10-10 | 1968-04-10 | $7700.00 | Window Closed / Lapsed |