US2688034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing acrylonitrile
Assignee: Monsanto Chemicals Ltd
•
Filing: 1952-03-07
•
Granted: 1954-08-31
•
Expires: 1972-03-07
Abstract
No abstract record available.
Inventors
- 👤 Carlyle J Stehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:12
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/30; C07C253/08; C07C253/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
THE METHOD FOR MANUFACTURING ACRYLONITRILE WHICH COMPRISES FEEDING LACTONITRILE AND ACETYLENE INTO AN ACIDIC SOLUTION OF CUPROUS CHLORIDE AND RECOVERING ACRYLONITRILE THEREFROM.
Claim 2
Independent Claim
22 words
THE METHOD FOR MANUFACTURING ACRYLONITRILE WHICH COMPRISES FEEDING LACTONITRILE AND ACETYLENE INTO AN ACIDIC SOLUTION OF CUPROUS CHLORIDE AND RECOVERING ACRYLONITRILE THEREFROM.
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) | 1957-08-30 | 1958-03-01 | 1958-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-30 | 1962-03-01 | 1962-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-30 | 1966-03-01 | 1966-08-31 | $7700.00 | Window Closed / Lapsed |