US2479205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of nitrogen-containing compounds
Assignee: Imperial Chemical Industries Ltd
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Filing: 1947-06-25
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Granted: 1949-08-16
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Expires: 1967-06-25
Abstract
No abstract record available.
Inventors
- 👤 Buckley Gerard Dunstan
- 👤 Ray Neil Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:34
CPC Classifications
C; C08; C08G; C08G73/00; B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/19; C07; C07C; C07C209/00; C07C209/68; C08G61/00; C08G61/02; C08G73/02; C08G73/024
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |