US3432300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
6-hydroxy chromans used as stabilizing agents in a color photographic element
Assignee: Eastman Kodak Co
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Filing: 1965-05-03
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Granted: 1969-03-11
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Expires: 1985-05-03
Abstract
No abstract record available.
Inventors
- 👤 Gregory J Lestina
- 👤 Warren A Reckhow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:23
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/04; C07D311/58; C07D311/70; C07D311/72; G; G03; G03C; G03C1/00; G03C1/76; G03C1/815; G03C1/8155; G03C8/00; G03C8/24; G03C8/246
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-03-10 | 1972-09-09 | 1973-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-03-10 | 1976-09-09 | 1977-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-03-10 | 1980-09-09 | 1981-03-11 | $7700.00 | Window Closed / Lapsed |