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US2728659A
Expired / Lapsed
US
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N-alkylhydroquinone antistain agents
Assignee: Eastman Kodak Co
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Filing: 1953-06-03
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Granted: 1955-12-27
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Expires: 1973-06-03
Abstract
No abstract record available.
Inventors
- 👤 Loria Anthony
- 👤 John R Thirtle
- 👤 Weissberger Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:57
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/392; G03C7/39208; G03C7/39212; G03C7/39216
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2360290A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |