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US3462270A
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Color photography utilizing 1-fluoroalkyl - 2 - pyrazoline - 5 - one colour couplers
Assignee: Agfa Gevaert NV
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Filing: 1965-07-14
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Granted: 1969-08-19
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Expires: 1985-07-14
Abstract
No abstract record available.
Inventors
- 👤 Hector Alfons Vanden Eynde
- 👤 Robert Joseph Pollet
- 👤 Arthur Henri De Cat
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:43
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/44; C07D231/52; C07D231/18; C07D231/20; G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/38; G03C7/384
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2895826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |