Patent US2369776A successfully refreshed from Google Patents.
US2369776A
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US
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Nitrogenous organic compounds and their application
Assignee: Imperial Chemical Industries Ltd
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Filing: 1938-06-28
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Granted: 1945-02-20
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Expires: 1958-06-28
Abstract
No abstract record available.
Inventors
- 👤 Cuss Noel William
- 👤 Salkeld Charles Edward
- 👤 Walker Eric Everard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:36
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; D; D06; D06M; D06M13/00; D06M13/322
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) | 1948-02-20 | 1948-08-21 | 1949-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-02-20 | 1952-08-21 | 1953-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-02-20 | 1956-08-21 | 1957-02-20 | $7700.00 | Window Closed / Lapsed |