Patent US2423730A successfully refreshed from Google Patents.
US2423730A
Expired / Lapsed
US
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Acylamino phenols
Assignee: Eastman Kodak Co
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Filing: 1944-06-08
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Granted: 1947-07-08
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Expires: 1964-06-08
Abstract
No abstract record available.
Inventors
- 👤 Ilmari F Salminen
- 👤 Weissberger Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:25
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/34; G03C7/346
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CH158239A
Cited
US2179239A
Cited
US2179234A
Cited
US2083962A
Cited
US2181944A
Cited
US2324832A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |