US3574619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentrated liquid color developers containing benzyl alcohol
Assignee: Eastman Kodak Co
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Filing: 1968-04-10
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Granted: 1971-04-13
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Expires: 1988-04-10
Abstract
Abstract CONCENTRATED ACIDIC SOLUTIONS CONTAINING BENZYL ALCOHOL AND WATER ARE PREPARED USING SIMPLE LIQUID GLYCOLS, E.G. ETHYLENE GLYCOL. SUCH CONCENTRATES RENDER FEASIBLE THE PACKAGING OF PHOTOGRAPHIC COLOR DEVELOPING AGENTS TOGETHER WITH BENZYL ALCOHOL IN CONCENTRATED LIQUID COLOR DEVELOPER COMPONENTS.
Inventors
- 👤 John Joseph Surash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:34
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/264; G03C5/266; G03C7/00; G03C7/30; G03C7/407; G03C7/413
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |