US3730713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer scavengers for image transfer systems
Assignee: Eastman Kodak Co
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Filing: 1971-05-26
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Granted: 1973-05-01
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Expires: 1991-05-26
Abstract
Abstract A DEVELOPER SCAVENGER LAYER COMPRISING A BIS(VINYLSULFONYLALKYL) DERIVATIVE IN A POLYMERIC BINDER IS USEFUL FOR REDUCING BACKGROUND STRAIN IN A DYE IMAGE-RECEIVING ELEMENT OF A COLOR DIFFUSION TRANSFER SYSTEM UTILIZING IMMOBILE COUPLERS WHICH FORM DIFFUSIBLE DYES.
Inventors
- 👤 T Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:36
CPC Classifications
G; G03; G03C; G03C8/00
Claims Analysis
Total Claims: 0
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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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |