US3469985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-absorbing dyes derived from barbituric and 2 - thiobarbituric acid compounds useful for photography and their preparation
Assignee: Eastman Kodak Co
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Filing: 1968-04-04
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Granted: 1969-09-30
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Expires: 1988-04-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:43
CPC Classifications
C; C07; C07D; C07D491/00; C07D491/02; C07D491/04; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06; C09B23/08; C09B23/083; C09B23/10; C09B23/102; C09B23/105; C09B23/107; G; G03; G03C; G03C1/00; G03C1/76; G03C1/825; G03C1/83; G03C1/832
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB519895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |