Patent US3099689A successfully refreshed from Google Patents.
US3099689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon metal catalyst in preparation of formamides
Assignee: Ethyl Corp
•
Filing: 1961-05-31
•
Granted: 1963-07-30
•
Expires: 1981-05-31
Abstract
No abstract record available.
Inventors
- 👤 Hoyt J Cragg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:55
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/20; B01J31/22; B01J31/2282; B01J31/2295; B01J2231/00; B01J2231/30; B01J2231/34; B01J2531/00; B01J2531/40; B01J2531/46; B01J2531/50; B01J2531/60; B01J2531/70; B01J2531/72; B01J2531/80; B01J2531/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
IN THE PROCESS FOR THE PEPARATION OF N,N-DI-N-BUTYL FORMAMIDE WHICH COMPRISES THE REACTION OF N,N-DI-N-BUTYL AMINE WITH CARBON MONOXIDE AT AN ELEVATED TEMPERATURE OF 150-180*C. AND AT A PRESSURE OF 30-60 ATMOSPHERES, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE SAID REACTION IN THE PRESENCE OF BIS(METHYLCYCLOPENTADIENYL)MANGANESE AS A CATALYST.
Claim 2
Dependent Claim
49 words
IN THE PROCESS FOR THE PEPARATION OF N,N-DI-N-BUTYL FORMAMIDE WHICH COMPRISES THE REACTION OF N,N-DI-N-BUTYL AMINE WITH CARBON MONOXIDE AT AN ELEVATED TEMPERATURE OF 150-180*C. AND AT A PRESSURE OF 30-60 ATMOSPHERES, THE IMPROVEMENT WHICH COMPRISES CARRYING OUT THE SAID REACTION IN THE PRESENCE OF BIS(METHYLCYCLOPENTADIENYL)MANGANESE AS A CATALYST.
References Cited (Backward Citations)
US2793211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |