US3384657A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acetoacetamide couplers in which the non-oxo carbon atom of the aceto group is a tertiary carbon atom
Assignee: Eastman Kodak Co
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Filing: 1965-09-28
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Granted: 1968-05-21
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Expires: 1985-09-28
Abstract
No abstract record available.
Inventors
- 👤 Weissberger Arnold
- 👤 Charles J Kibler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:12
CPC Classifications
C; C07; C07D; C07D271/00; C07D271/02; C07D271/10; C07D271/113; C07D295/00; C07D295/16; C07D295/18; C07D295/182; C07D295/192; G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30511; G03C7/30517; G03C7/30535; G03C7/32; G03C7/36; G03C7/367
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |