US2455995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitriles from certain olefins and hcn
Assignee: EIDP Inc
•
Filing: 1947-07-05
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Granted: 1948-12-14
•
Expires: 1967-07-05
Abstract
No abstract record available.
Inventors
- 👤 Charles R Harris
- 👤 Atley Wilbur W De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:23
CPC Classifications
C; C07; C07C; C07C253/00; C07C253/08; C07C253/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE463123C
Cited
FR728241A
Cited
US2385741A
Cited
US2353091A
Cited
US2432532A
Cited
GB583607A
Cited
US2445693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-14 | 1952-06-14 | 1952-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-14 | 1956-06-14 | 1956-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-14 | 1960-06-14 | 1960-12-14 | $7700.00 | Window Closed / Lapsed |