US3398152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the synthesis of yellow methine dyes containing the dicyanomethylidene group
Assignee: Eastman Kodak Co
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Filing: 1966-03-11
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Granted: 1968-08-20
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Expires: 1986-03-11
Abstract
No abstract record available.
Inventors
- 👤 David J Wallace
- 👤 Max A Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:13
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/14; C09B23/143; C09B23/0008; C09B23/005; C09B23/0058
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) | 1971-08-20 | 1972-02-19 | 1972-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-20 | 1976-02-19 | 1976-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-20 | 1980-02-19 | 1980-08-20 | $7700.00 | Window Closed / Lapsed |