US3383214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photography utilizing color couplers which yield quinone imine or azamethine dye images
Assignee: Ilford Imaging UK Ltd
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Filing: 1965-02-15
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Granted: 1968-05-14
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Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Anderson Brian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:45
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3212; C; C07; C07C; C07C275/00; C07C275/28; C07C275/42; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/44; C07D231/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3161512A
Cited
US3278306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |