US2666748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogen cyanide-cobalt carbonyl reaction product
Assignee: EIDP Inc
•
Filing: 1952-02-07
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Granted: 1954-01-19
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Expires: 1972-02-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul Arthur
- 👤 Pratt Burt Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:06
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1805; B01J31/20; C; C07; C07C; C07C253/00; C07C253/08; C07C253/10; C07D; C07D307/00; C07D307/77; C07D307/93; C08; C08G; C08G69/00; C08G69/02; C08G69/26; B01J2231/00; B01J2231/30; B01J2231/32; B01J2531/00; B01J2531/80; B01J2531/84; B01J2531/845; C07C2602/00; C07C2602/36; C07C2602/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2385741A
Cited
US2455995A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |