US3519429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide emulsions containing a stabilizer pyrazolone coupler
Assignee: Eastman Kodak Co
•
Filing: 1966-05-16
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Granted: 1970-07-07
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Expires: 1986-05-16
Abstract
No abstract record available.
Inventors
- 👤 Gregory J Lestina
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:53
CPC Classifications
C; C09; C09B; C09B43/00; C09B43/12; C09B43/124; C09B43/132; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/28; C07D231/30; C07D231/32; C07D231/44; C07D231/52; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/70; C07D311/72; 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)
US2691659A
Cited
US2437063A
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US2369489A
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US2455170A
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US2511231A
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US2632702A
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US2672417A
Cited
US2618641A
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US3227551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-06 | 1974-01-05 | 1974-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-06 | 1978-01-05 | 1978-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-06 | 1982-01-05 | 1982-07-07 | $7700.00 | Window Closed / Lapsed |